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Amount of substance

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Question 27

Ozone (O3\text{O}_3O3​) in the upper stratosphere decomposes according to the following equation:

2O3(g)→3O2(g)ΔrH=−240 kJ mol−1 2\text{O}_3(\text{g}) \rightarrow 3\text{O}_2(\text{g}) \quad \Delta_{\text{r}} H = -240\text{ kJ mol}^{-1} 2O3​(g)→3O2​(g)Δr​H=−240 kJ mol−1

At a high altitude, the molar gas volume is approximately 5.0 m3 mol-1.

What is the energy released, in kJ\text{kJ}kJ, during the decomposition of 2.0 m3 of ozone under these conditions?

96.096.096.0

192192192

300300300

48.048.048.0

Amount of substance Questions

  1. A Level
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