Question 1

Marks: 1

Question 2

Marks: 1

Question 3

Marks: 1

Question 4

Marks: 1

Question 5

Marks: 1

Question 6

Marks: 1

Question 7

Marks: 1

A periodic table is needed for this question

Sodium sulfide, Na₂S, is a reactive yellow solid, produced when sodium and sulfur react together.

How do the ionic radius and atomic radius of sodium compare with those of sulfur?

	ionic radius	atomic radius
A	sodium < sulfur	sodium < sulfur
B	sodium < sulfur	sodium > sulfur
C	sodium > sulfur	sodium > sulfur
D	sodium > sulfur	sodium < sulfur

Question 8

Marks: 1

Which statement correctly describes the trend in metallic radius in group I elements
Na to Rb?

Increases moving down the group
Increases moving down due to the addition of electron shells
Decreases moving down due to increasing nuclear forces

I and II only
I and III only
II and III only
I, II and III

Question 9

Marks: 1

Phosphine, PH₃, can react with a hydrogen ion, H⁺, to form the phosphonium ion.

Which type of bond is formed in this reaction?

dipole-dipole forces
dative covalent bond
ionic bond
hydrogen bond

Question 10

Marks: 1

Which of the following statements about graphite are correct?

The carbon atoms are joined together by three covalent bonds
Graphite contains delocalised electrons
The C-C-C bond angle is 109.5^o

I and II only
I and III only
II and III only
I, II and III

Question 11

Marks: 1

The properties of alloys can be explained in terms of metals having

Non-directional bonding
Delocalised electrons
Ions of different size

I and II only
I and III only
II and III only
I, II and III

Question 12

Marks: 1

A student mixed 30.0 cm³of 0.0250 mol dm^-3potassium hydroxide solution with 30.0 cm³of 0.0250 mol dm^-3 nitric acid. The temperature rose by 0.50 ^oC. Assume no heat was lost to the surroundings.

The mixture had a specific heat capacity of 4.18 J g ^-1 K^-1.

What is the molar enthalpy change for the reaction?

$- \frac{30 \times 4.18 \times 0.5 \times 1000}{0.025 \times 30}$
$- \frac{60 \times 4.18 \times 0.5}{0.025 \times 30}$
$- \frac{0.025 \times 30}{60 \times 4.18 \times 0.5 \times 1000}$
$- \frac{60 \times 4.18 \times 0.5}{0.025 \times 30}$

Question 13

Marks: 1

The reaction of hydrochloric acid with sodium hydroxide produced an overall temperature increase of 24.4 K.

Given the following data, how much thermal energy was evolved during this reaction?

Initial temperature of 25.0 cm³ hydrochloric acid = 17.6 ^oC

Initial temperature of 25.0 cm³ sodium hydroxide = 18.5 ^oC

The specific heat capacity of water is 4.18 J g^-1 K^-1.

(25.0 x 4.18 x 6.8) + (25.0 x 4.18 x 5.9)
$\frac{(25.0 \times 4.18 \times 6.8) + (25.0 \times 4.18 \times 5.9)}{2}$
50.0 x 4.18 x $(\frac{6.8 + 5.9}{2})$
(50.0 x 4.18 x 6.8) + (50.0 x 4.18 x 5.9)

Question 14

Marks: 1

The first stage in the industrial production of nitric acid from ammonia can be represented by the following equation.

4NH₃(g) + 5O₂(g) ⇌ 4NO(g) + 6H₂O(g)

Using the following standard enthalpy change of formation data, what is the value of the standard enthalpy change $∆ H^{⦵}$ for this reaction?

Compound	$∆ H_{f}^{⦵}$ /kJ mol^{– 1}
NH₃ (g)	-46.1
NO (g)	+90.3
H₂O (g)	-241.8

$(4 \times (- 46.1)) + ((4 \times 90.3) + (6 \times (- 241.8))$
$((4 \times 90.3) + (6 \times (- 241.8)) - (4 \times (- 46.1))$
$(4 \times (- 46.1)) - ((4 \times 90.3) + (6 \times (- 241.8)))$
$(- 46.1) - (90.3) + (- 241.8)$

Question 15

Marks: 1

Which equation correctly shows how the bond energy for the covalent bond Y–Z can be calculated by dividing ΔH by n?

nYZ(g) → nY(g) + $\frac{n}{2}$ Z₂(g)
Z(g) + YZ_n-1(g) → YZ_n(g)
2YZ_n (g) → 2YZ_n-1(g) + Y₂(g)
YZ_n(g) → Y(g) + nZ(g)

Question 16

Marks: 1

Question 17

Marks: 1

Question 18

Marks: 1

Question 19

Marks: 1

The following reaction occurs between concentrated sulfuric and nitric acids.

H₂SO₄ + HNO₃ ⇋ H₂NO₃⁺ + HSO₄^-

Identify the two species which are acting as Brønsted–Lowry bases.

H₂NO₃⁺ and HSO₄^-
HNO₃ and H₂NO₃⁺
H₂SO₄ and HSO₄^-
HNO₃ and HSO₄^-

Question 20

Marks: 1

Calculate the pH of a solution of NaOH of concentration 0.001 mol dm^-3

1
3
11
13

Question 21

Marks: 1

Acid rain can be up to 50 times more acidic than normal rain, which has a pH around 5.5. What is the approximate concentration of H⁺ in acid rain?

2.50 $\times$ 10^-3mol dm^-3
2.50 $\times$ 10^-4mol dm^-3
2.50 $\times$ 10^-5mol dm^-3
50.0 $\times$ 10^-4mol dm^-3

Question 22

Marks: 1

Question 23

Marks: 1

Question 24

Marks: 1

Question 25

Marks: 1

Question 26

Marks: 1

Question 27

Marks: 1

Question 28

Marks: 1

Question 29

Marks: 1

Question 30

Marks: 1

DP IB Chemistry: SL

Practice Paper Questions

Practice Paper 1

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9

Question 10

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20

Question 21

Question 22

Question 23

Question 24

Question 25

Question 26

Question 27

Question 28

Question 29

Question 30

Resources

Members

Company

Quick Links