| Date | May 2013 | Marks available | 1 | Reference code | 13M.1.hl.TZ1.23 |
| Level | HL | Paper | 1 | Time zone | TZ1 |
| Command term | Solve | Question number | 23 | Adapted from | N/A |
Question
When gaseous nitrosyl chloride, NOCl (g), decomposes, the following equilibrium is established:
\[{\text{2NOCl(g)}} \rightleftharpoons {\text{2NO(g)}} + {\text{C}}{{\text{l}}_2}{\text{(g)}}\]
2.0 mol of NOCl(g) were placed in a \({\text{1.0 d}}{{\text{m}}^{\text{3}}}\) container and allowed to reach equilibrium. At equilibrium 1.0 mol of NOCl(g) was present. What is the value of \({K_{\text{c}}}\)?
A. 0.50
B. 1.0
C. 1.5
D. 2.0
Markscheme
A
Examiners report
[N/A]
