Nitrous oxide decomposes in the stratosphere. The overall equation is:
2N2O(g)→2N2(g)+O2(g) 2\text{N}_2\text{O}(\text{g}) \rightarrow 2\text{N}_2(\text{g}) + \text{O}_2(\text{g}) 2N2O(g)→2N2(g)+O2(g)with ΔrH=−164 kJ mol−1\Delta_{\text{r}} H = -164\text{ kJ mol}^{-1}ΔrH=−164 kJ mol−1.
The molar gas volume in this region is approximately 4.0 m3 mol-1.
What is the energy released, in kJ\text{kJ}kJ, during the decomposition of 2.0 m3 of nitrous oxide?
41.041.041.0
82.082.082.0
164164164
328328328
199 exam-style questions on OCR A A Level Chemistry Atoms and reactions, covering Atomic structure and isotopes, Compounds, formulae and equations, Amount of substance, Acids, and Redox. Each one has a worked solution and a mark scheme showing where the marks go.