| Date | November 2016 | Marks available | 1 | Reference code | 16N.1.sl.TZ0.13 |
| Level | SL | Paper | 1 | Time zone | TZ0 |
| Command term | Determine | Question number | 13 | Adapted from | N/A |
Question
Hydrazine reacts with oxygen.
N2H4(l) + O2(g) → N2(g) + 2H2O(l) ΔHθ = -623 kJ
What is the standard enthalpy of formation of N2H4(l) in kJ? The standard enthalpy of formation of H2O(l) is -286 kJ.
A. -623 - 286
B. -623 + 572
C. -572 + 623
D. -286 + 623
Markscheme
C
Examiners report
[N/A]
