11.2 Graphical techniques

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17N.2.hl.TZ0.1b: Determine the maximum temperature reached in each experiment by analysing the graph.
17N.2.hl.TZ0.1b: Determine the maximum temperature reached in each experiment by analysing the graph.
17N.2.hl.TZ0.b: Determine the maximum temperature reached in each experiment by analysing the graph.
17N.3.sl.TZ0.3a: Estimate the lowest freezing point of water that can be reached by adding sodium chloride.
17N.3.sl.TZ0.3a: Estimate the lowest freezing point of water that can be reached by adding sodium chloride.
17N.3.sl.TZ0.a: Estimate the lowest freezing point of water that can be reached by adding sodium chloride.
21M.1.sl.TZ2.30: A liquid was added to a graduated cylinder. What can be deduced from the graph?
21M.1.sl.TZ2.30: A liquid was added to a graduated cylinder. What can be deduced from the graph?
21M.2.sl.TZ1.6b(ii):
Deduce the relationship between the concentration of N₂O₅ and the rate of reaction.
21M.2.sl.TZ1.6b(ii):
Deduce the relationship between the concentration of N₂O₅ and the rate of reaction.
21M.2.sl.TZ1.b(ii):
Deduce the relationship between the concentration of N₂O₅ and the rate of reaction.
18M.2.hl.TZ1.4c:
Predict from your line of best fit the rate of reaction when the concentration of HCl is 1.00 mol dm⁻³.
18M.2.hl.TZ1.4c:
Predict from your line of best fit the rate of reaction when the concentration of HCl is 1.00 mol dm⁻³.
18M.2.hl.TZ1.c:
Predict from your line of best fit the rate of reaction when the concentration of HCl is 1.00 mol dm⁻³.
18M.1.sl.TZ2.30: The rate of a reaction is studied at different temperatures. Which is the best way to plot the...
18M.1.sl.TZ2.30: The rate of a reaction is studied at different temperatures. Which is the best way to plot the...
21N.1.sl.TZ0.29: Which graph shows the relationship between the pressure and volume of a sample of gas at constant...
21N.1.sl.TZ0.29: Which graph shows the relationship between the pressure and volume of a sample of gas at constant...
18N.3.hl.TZ0.1e.i:
The original piece of brass weighed 0.200 g. The absorbance was 0.32.

Calculate, showing your working, the percentage of copper by mass in the brass.
18N.3.hl.TZ0.1e.i:
The original piece of brass weighed 0.200 g. The absorbance was 0.32.

Calculate, showing your working, the percentage of copper by mass in the brass.
18N.3.hl.TZ0.e.i:
The original piece of brass weighed 0.200 g. The absorbance was 0.32.

Calculate, showing your working, the percentage of copper by mass in the brass.
18N.2.hl.TZ0.1c.i:
Sketch a graph of the concentration of iron(II) sulfate, FeSO₄, against time as the reaction proceeds.
18N.2.hl.TZ0.1c.i:
Sketch a graph of the concentration of iron(II) sulfate, FeSO₄, against time as the reaction proceeds.
18N.2.hl.TZ0.c.i:
Sketch a graph of the concentration of iron(II) sulfate, FeSO₄, against time as the reaction proceeds.
22M.1.sl.TZ2.17: A reaction has an activation energy of 40 kJ mol−1 and an enthalpy change of −60 kJ mol−1. Which...
22M.1.sl.TZ2.17: A reaction has an activation energy of 40 kJ mol−1 and an enthalpy change of −60 kJ mol−1. Which...
19M.3.hl.TZ1.1b(i):
Describe the density trend across periods 4 and 5 of the periodic table.
19M.3.hl.TZ1.1b(i):
Describe the density trend across periods 4 and 5 of the periodic table.
19M.3.hl.TZ1.b(i):
Describe the density trend across periods 4 and 5 of the periodic table.
19M.3.hl.TZ1.1b(iii):
Compare the ease of oxidation of s-block and d-block metals to their melting points and densities. Use section 25 of the data booklet.
19M.3.hl.TZ1.1b(iii):
Compare the ease of oxidation of s-block and d-block metals to their melting points and densities. Use section 25 of the data booklet.
19M.3.hl.TZ1.b(iii):
Compare the ease of oxidation of s-block and d-block metals to their melting points and densities. Use section 25 of the data booklet.
19M.1.sl.TZ2.29:
Data collected from a larger number of silicon samples could also be plotted to determine the density using the following axes.

Which statements are correct?

I. The density is the slope of the graph.
II. The data will show that mass is proportional to volume.
III. The best-fit line should pass through the origin.

A. I and II only

B. I and III only

C. II and III only

D. I, II and III
19M.1.sl.TZ2.29:
Data collected from a larger number of silicon samples could also be plotted to determine the density using the following axes.

Which statements are correct?

I. The density is the slope of the graph.
II. The data will show that mass is proportional to volume.
III. The best-fit line should pass through the origin.

A. I and II only

B. I and III only

C. II and III only

D. I, II and III
17N.2.sl.TZ0.1a: Using the graph, estimate the initial temperature of the solution.
17N.2.sl.TZ0.1a: Using the graph, estimate the initial temperature of the solution.
17N.2.sl.TZ0.a: Using the graph, estimate the initial temperature of the solution.
17N.2.sl.TZ0.1b: Determine the maximum temperature reached in the experiment by analysing the graph.
17N.2.sl.TZ0.1b: Determine the maximum temperature reached in the experiment by analysing the graph.
17N.2.sl.TZ0.b: Determine the maximum temperature reached in the experiment by analysing the graph.
17N.2.hl.TZ0.1a: Using the graph, estimate the initial temperature of the solutions.
17N.2.hl.TZ0.1a: Using the graph, estimate the initial temperature of the solutions.
17N.2.hl.TZ0.a: Using the graph, estimate the initial temperature of the solutions.
17N.3.sl.TZ0.1b.i: Suggest what the correlation coefficient of −0.9999 indicates.
17N.3.sl.TZ0.1b.i: Suggest what the correlation coefficient of −0.9999 indicates.
17N.3.sl.TZ0.b.i: Suggest what the correlation coefficient of −0.9999 indicates.
17N.3.sl.TZ0.1b.ii: State the equation of the straight line obtained using the data.
17N.3.sl.TZ0.1b.ii: State the equation of the straight line obtained using the data.
17N.3.sl.TZ0.b.ii: State the equation of the straight line obtained using the data.
17N.3.sl.TZ0.3b: Estimate the percentage by mass of NaCl dissolved in a saturated sodium chloride solution at +10 ºC.
17N.3.sl.TZ0.3b: Estimate the percentage by mass of NaCl dissolved in a saturated sodium chloride solution at +10 ºC.
17N.3.sl.TZ0.b: Estimate the percentage by mass of NaCl dissolved in a saturated sodium chloride solution at +10 ºC.
18M.2.hl.TZ1.4b.ii:
Draw the best fit line for the reaction excluding point D.
18M.2.hl.TZ1.4b.ii:
Draw the best fit line for the reaction excluding point D.
18M.2.hl.TZ1.b.ii:
Draw the best fit line for the reaction excluding point D.
18N.2.sl.TZ0.1c.i:
Sketch a graph of the concentration of iron(II) sulfate, FeSO₄, against time as the reaction proceeds.
18N.2.sl.TZ0.1c.i:
Sketch a graph of the concentration of iron(II) sulfate, FeSO₄, against time as the reaction proceeds.
18N.2.sl.TZ0.c.i:
Sketch a graph of the concentration of iron(II) sulfate, FeSO₄, against time as the reaction proceeds.
18N.2.sl.TZ0.1c.ii:
Outline how the initial rate of reaction can be determined from the graph in part (c)(i).
18N.2.sl.TZ0.1c.ii:
Outline how the initial rate of reaction can be determined from the graph in part (c)(i).
18N.2.sl.TZ0.c.ii:
Outline how the initial rate of reaction can be determined from the graph in part (c)(i).
18N.2.hl.TZ0.1c.ii:
Outline how the initial rate of reaction can be determined from the graph in part (c)(i).
18N.2.hl.TZ0.1c.ii:
Outline how the initial rate of reaction can be determined from the graph in part (c)(i).
18N.2.hl.TZ0.c.ii:
Outline how the initial rate of reaction can be determined from the graph in part (c)(i).
18N.2.hl.TZ0.6c:
Sketch the pH curve for the titration of 25.0 cm³ of ethylamine aqueous solution with 50.0 cm³ of butanoic acid aqueous solution of equal concentration. No calculations are required.
18N.2.hl.TZ0.6c:
Sketch the pH curve for the titration of 25.0 cm³ of ethylamine aqueous solution with 50.0 cm³ of butanoic acid aqueous solution of equal concentration. No calculations are required.
18N.2.hl.TZ0.c:
Sketch the pH curve for the titration of 25.0 cm³ of ethylamine aqueous solution with 50.0 cm³ of butanoic acid aqueous solution of equal concentration. No calculations are required.
18N.3.sl.TZ0.1b:
Deduce the equation for the relationship between absorbance and concentration.
18N.3.sl.TZ0.1b:
Deduce the equation for the relationship between absorbance and concentration.
18N.3.sl.TZ0.b:
Deduce the equation for the relationship between absorbance and concentration.
18N.3.sl.TZ0.1d.i:
The original piece of brass weighed 0.200 g. The absorbance was 0.32.

Calculate, showing your working, the percentage of copper by mass in the brass.
18N.3.sl.TZ0.1d.i:
The original piece of brass weighed 0.200 g. The absorbance was 0.32.

Calculate, showing your working, the percentage of copper by mass in the brass.
18N.3.sl.TZ0.d.i:
The original piece of brass weighed 0.200 g. The absorbance was 0.32.

Calculate, showing your working, the percentage of copper by mass in the brass.
18N.3.hl.TZ0.1b:
Deduce the equation for the relationship between absorbance and concentration.
18N.3.hl.TZ0.1b:
Deduce the equation for the relationship between absorbance and concentration.
18N.3.hl.TZ0.b:
Deduce the equation for the relationship between absorbance and concentration.
19M.2.hl.TZ1.4b(i):
In a laboratory experiment solutions of potassium iodide and hydrogen peroxide were mixed and the volume of oxygen generated was recorded. The volume was adjusted to 0 at t = 0.

The data for the first trial is given below.

Plot a graph on the axes below and from it determine the average rate of
formation of oxygen gas in cm³ O₂ (g) s⁻¹.

Average rate of reaction:
19M.2.hl.TZ1.4b(i):
In a laboratory experiment solutions of potassium iodide and hydrogen peroxide were mixed and the volume of oxygen generated was recorded. The volume was adjusted to 0 at t = 0.

The data for the first trial is given below.

Plot a graph on the axes below and from it determine the average rate of
formation of oxygen gas in cm³ O₂ (g) s⁻¹.

Average rate of reaction:
19M.2.hl.TZ1.b(i):
In a laboratory experiment solutions of potassium iodide and hydrogen peroxide were mixed and the volume of oxygen generated was recorded. The volume was adjusted to 0 at t = 0.

The data for the first trial is given below.

Plot a graph on the axes below and from it determine the average rate of
formation of oxygen gas in cm³ O₂ (g) s⁻¹.

Average rate of reaction:
19M.1.hl.TZ1.39:
The dotted line represents the formation of oxygen, O₂ (g), from the uncatalysed complete decomposition of hydrogen peroxide, H₂O₂ (aq).

Which curve represents a catalysed reaction under the same conditions?
19M.1.hl.TZ1.39:
The dotted line represents the formation of oxygen, O₂ (g), from the uncatalysed complete decomposition of hydrogen peroxide, H₂O₂ (aq).

Which curve represents a catalysed reaction under the same conditions?
19M.2.sl.TZ1.4b(i):
In a laboratory experiment solutions of potassium iodide and hydrogen peroxide were mixed and the volume of oxygen generated was recorded. The volume was adjusted to 0 at t = 0.

The data for the first trial is given below.

Plot a graph on the axes below and from it determine the average rate of formation of oxygen gas in cm³ O₂ (g) s⁻¹.

Average rate of reaction:
19M.2.sl.TZ1.4b(i):
In a laboratory experiment solutions of potassium iodide and hydrogen peroxide were mixed and the volume of oxygen generated was recorded. The volume was adjusted to 0 at t = 0.

The data for the first trial is given below.

Plot a graph on the axes below and from it determine the average rate of formation of oxygen gas in cm³ O₂ (g) s⁻¹.

Average rate of reaction:
19M.2.sl.TZ1.b(i):
In a laboratory experiment solutions of potassium iodide and hydrogen peroxide were mixed and the volume of oxygen generated was recorded. The volume was adjusted to 0 at t = 0.

The data for the first trial is given below.

Plot a graph on the axes below and from it determine the average rate of formation of oxygen gas in cm³ O₂ (g) s⁻¹.

Average rate of reaction:
19M.3.sl.TZ1.1b(i):
Describe the density trend across periods 4 and 5 of the periodic table.
19M.3.sl.TZ1.1b(i):
Describe the density trend across periods 4 and 5 of the periodic table.
19M.3.sl.TZ1.b(i):
Describe the density trend across periods 4 and 5 of the periodic table.
19M.3.sl.TZ1.1b(iii):
Compare the ease of oxidation of s-block and d-block metals to their melting points and densities. Use section 25 of the data booklet.
19M.3.sl.TZ1.1b(iii):
Compare the ease of oxidation of s-block and d-block metals to their melting points and densities. Use section 25 of the data booklet.
19M.3.sl.TZ1.b(iii):
Compare the ease of oxidation of s-block and d-block metals to their melting points and densities. Use section 25 of the data booklet.
19M.1.sl.TZ1.29:
The dotted line represents the formation of oxygen, O₂(g), from the uncatalysed complete decomposition of hydrogen peroxide, H₂O₂ (aq).

Which curve represents a catalysed reaction under the same conditions?
19M.1.sl.TZ1.29:
The dotted line represents the formation of oxygen, O₂(g), from the uncatalysed complete decomposition of hydrogen peroxide, H₂O₂ (aq).

Which curve represents a catalysed reaction under the same conditions?
19N.3.sl.TZ0.1a: Draw a best-fit line on the graph.
19N.3.sl.TZ0.1a: Draw a best-fit line on the graph.
19N.3.sl.TZ0.a: Draw a best-fit line on the graph.
19N.3.sl.TZ0.1b(i):
Determine the initial rate of reaction of limestone with nitric acid from the graph.

Show your working on the graph and include the units of the initial rate.
19N.3.sl.TZ0.1b(i):
Determine the initial rate of reaction of limestone with nitric acid from the graph.

Show your working on the graph and include the units of the initial rate.
19N.3.sl.TZ0.b(i):
Determine the initial rate of reaction of limestone with nitric acid from the graph.

Show your working on the graph and include the units of the initial rate.
19N.3.hl.TZ0.14a: The graph shows the change in oxygen partial pressure in blood, measured at different pH...
19N.3.hl.TZ0.14a: The graph shows the change in oxygen partial pressure in blood, measured at different pH...
19N.3.hl.TZ0.a: The graph shows the change in oxygen partial pressure in blood, measured at different pH...
19N.1.hl.TZ0.5: Which shows the first ionization energies of successive elements across period 2, from left to...
19N.1.hl.TZ0.5: Which shows the first ionization energies of successive elements across period 2, from left to...
21N.1.sl.TZ0.28: What is the slope of the graph? A. −0.0025 mol dm−3 s−1 B. −0.0025 mol dm−3 s C. ...
21N.1.sl.TZ0.28: What is the slope of the graph? A. −0.0025 mol dm−3 s−1 B. −0.0025 mol dm−3 s C. ...
21N.1.hl.TZ0.23:
The graph shows Gibbs free energy of a mixture of N₂O₄(g) and NO₂(g) in different proportions.

N₂O₄(g) $⇌$ 2NO₂(g)

Which point shows the system at equilibrium?
21N.1.hl.TZ0.23:
The graph shows Gibbs free energy of a mixture of N₂O₄(g) and NO₂(g) in different proportions.

N₂O₄(g) $⇌$ 2NO₂(g)

Which point shows the system at equilibrium?
22M.1.sl.TZ2.3: Which graph represents the relationship between the amount of gas, n, and the absolute...
22M.1.sl.TZ2.3: Which graph represents the relationship between the amount of gas, n, and the absolute...
22M.1.sl.TZ2.30:
20 cm³ of 1 mol dm⁻³ sulfuric acid was added dropwise to 20 cm³ of 1 mol dm⁻³ barium hydroxide producing a precipitate of barium sulfate.

H₂SO₄(aq) + Ba(OH)₂(aq) → 2H₂O (l) + BaSO₄(s)

Which graph represents a plot of conductivity against volume of acid added?
22M.1.sl.TZ2.30:
20 cm³ of 1 mol dm⁻³ sulfuric acid was added dropwise to 20 cm³ of 1 mol dm⁻³ barium hydroxide producing a precipitate of barium sulfate.

H₂SO₄(aq) + Ba(OH)₂(aq) → 2H₂O (l) + BaSO₄(s)

Which graph represents a plot of conductivity against volume of acid added?
22M.1.hl.TZ2.20: Which energy profile diagram represents an exothermic SN1 reaction?
22M.1.hl.TZ2.20: Which energy profile diagram represents an exothermic SN1 reaction?
22M.2.hl.TZ1.2c(i):
Use the graph to deduce the dependence of the reaction rate on the amount of Mg.
22M.2.hl.TZ1.2c(i):
Use the graph to deduce the dependence of the reaction rate on the amount of Mg.
22M.2.hl.TZ1.c(i):
Use the graph to deduce the dependence of the reaction rate on the amount of Mg.

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11.2 Graphical techniques

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