Three of the following reactions have a significant increase in entropy

CHEMISTRY · Subjective · A Level · Chemistry · Thermodynamics · Thermodynamics

Problem

Three of the following reactions have a significant increase in entropy. State which three reactions show a significant increase in entropy. 1. CaCO3(s)→CaO(s)+CO2(g)\text{CaCO}_3(\text{s}) \rightarrow \text{CaO}(\text{s}) + \text{CO}_2(\text{g}) 2. H2(g)+Cl2(g)→2HCl(g)\text{H}_2(\text{g}) + \text{Cl}_2(\text{g}) \rightarrow 2\text{HCl}(\text{g}) 3. C(s)+O2(g)→CO2(g)\text{C}(\text{s}) + \text{O}_2(\text{g}) \rightarrow \text{CO}_2(\text{g}) 4. 2C(s)+O2(g)→2CO(g)2\text{C}(\text{s}) + \text{O}_2(\text{g}) \rightarrow 2\text{CO}(\text{g}) 5. C9H20(l)+14O2(g)→9CO2(g)+10H2O(g)\text{C}_9\text{H}_{20}(\text{l}) + 14\text{O}_2(\text{g}) \rightarrow 9\text{CO}_2(\text{g}) + 10\text{H}_2\text{O}(\text{g})

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