High-purity benzoic acid (C6H5COOH; ? Hrxn for combustion

Chapter 5, Problem 30P

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Problem 30P

High-purity benzoic acid (C6H5COOH; Δ Hrxn for combustion = ?3227 kJ/mol) is used as a standard for calibrating bomb calorimeters. A 1.221 -g sample bums in a calorimeter (heat capacity = 1365 J/°C) that contains exactly 1.200 kg of water. What temperature change is observed?

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