DP Chemistry (last assessment 2024)
Question 21M.2.sl.TZ1.4d(iii)
| Date | May 2021 | Marks available | [Maximum mark: 1] | Reference code | 21M.2.sl.TZ1.4d(iii) |
| Level | sl | Paper | 2 | Time zone | TZ1 |
| Command term | State and explain | Question number | d(iii) | Adapted from | N/A |
d(iii).
[Maximum mark: 1]
21M.2.sl.TZ1.4d(iii)
Hydrogen peroxide can react with methane and oxygen to form methanol. This reaction can occur below 50°C if a gold nanoparticle catalyst is used.
Consider the first stage of the reaction.
CH4 (g) + H2O (g) CO (g) + 3H2 (g)
(d(iii))
State and explain the effect of increasing temperature on the value of Kc.
[1]
Markscheme
Kc increases AND «forward» reaction endothermic ✔
