Igcse Model Questions Vol1 2023 Chemistry Question 20
Practice objective / multiple choice question 20 from the 2023 Igcse Model Questions Vol1 Chemistry examination.
Propanoic acid (\(\text{C}_3\text{H}_6\text{O}_2\)) combusts according to\n\(\text{C}_3\text{H}_6\text{O}_2(l) + 5\text{O}_2(g) \rightarrow 3\text{CO}_2(g) + 3\text{H}_2\text{O}(l)\).\nThe standard enthalpy change of combustion is \(\Delta_c H^{\circ} = -2215\ \text{kJ mol}^{-1}\). The standard enthalpy of formation of liquid water is \(\Delta_f H^{\circ}(\text{H}_2\text{O},l) = -285.8\ \text{kJ mol}^{-1}\) and that of propanoic acid is \(\Delta_f H^{\circ}(\text{C}_3\text{H}_6\text{O}_2,l) = -613\ \text{kJ mol}^{-1}\). Using these data, calculate the standard enthalpy of formation of carbon dioxide, \(\Delta_f H^{\circ}(\text{CO}_2,g)\).
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This is Igcse Model Questions Vol1 2023 Chemistry Question 20. It is one of the objective questions from the 2023 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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