DP Chemistry (last assessment 2024)
Question 18M.2.hl.TZ2.c.i
| Date | May 2018 | Marks available | [Maximum mark: 1] | Reference code | 18M.2.hl.TZ2.c.i |
| Level | hl | Paper | 2 | Time zone | TZ2 |
| Command term | Deduce, Justify | Question number | c.i | Adapted from | N/A |
c.i.
[Maximum mark: 1]
18M.2.hl.TZ2.c.i
A mixture of 1.00 mol SO2(g), 2.00 mol O2(g) and 1.00 mol SO3(g) is placed in a 1.00 dm3 container and allowed to reach equilibrium.
2SO2(g) + O2(g) 2SO3(g)
Nitrogen oxide is in equilibrium with dinitrogen dioxide.
2NO(g) N2O2(g) ΔHΘ < 0
Deduce, giving a reason, the effect of increasing the temperature on the concentration of N2O2.
[1]
Markscheme
[N2O2] decreases AND exothermic «thus reverse reaction favoured»
Accept “product” for [N2O2].
Do not accept just “reverse reaction favoured/shift to left” for “[N2O2] decreases”.
[1 mark]
