A 1.000 mol sample of propane, a gas used for cooking in many rural areas, was p
ID: 965018 • Letter: A
Question
A 1.000 mol sample of propane, a gas used for cooking in many rural areas, was placed in a bomb calorimeter with excess oxygen and ignited. The initial temperature of the calorimeter was 25.000 degree C and its total heat capacity was 95.35 kJ degree C^-1. The reaction raised the temperature of the calorimeter to 28.988 degree C. Enter the balanced chemical equation for the reaction in the calorimeter. How many kilojoules were liberated in this reaction? Express your answer in scientific notation. What is the heat of reaction of propane with oxygen expressed in kilojoules per mole of C_3H_8 burned?Explanation / Answer
a) C3H8(g) + 5O2(g) ----> 3CO2(g) + 4H2O(g)
b) q liberated = 95.35*(28.988 - 25)
= 380.256 kj
c) DHrxn = 380.256 kj/mol
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