DP Chemistry (last assessment 2024)
Question 21M.2.hl.TZ2.a(ii)
| Date | May 2021 | Marks available | [Maximum mark: 2] | Reference code | 21M.2.hl.TZ2.a(ii) |
| Level | hl | Paper | 2 | Time zone | TZ2 |
| Command term | Deduce | Question number | a(ii) | Adapted from | N/A |
a(ii).
[Maximum mark: 2]
21M.2.hl.TZ2.a(ii)
Ethanol and methanoic acid are important industrial products.
Ethanol is used as a fuel.
Deduce the change in enthalpy, ΔH, in kJ, when 56.00 g of ethanol is burned. Use section 13 in the data booklet.
[2]
Markscheme
«n = =» 1.215 «mol» ✓
«1.215mol × (−1367 kJ mol−1) =» −1661 «kJ» ✓
Award [2] for correct final answer.
Award [1 max] for “«+»1661 «kJ»”.
