A 128 G Sample of Ethanol (C₂H₅OH)is Burned in a Bomb

question 65

Multiple Choice

A 12.8 g sample of ethanol (C₂H₅OH) is burned in a bomb calorimeter with a heat capacity of 5.65 kJ/°C.Using the information below,determine the final temperature of the calorimeter if the initial temperature is 25.0°C.The molar mass of ethanol is 46.07 g/mol. C₂H₅OH(l) + 3 O₂(g) → 2 CO₂(g) + 3 H₂O(g) ΔH°_rxn = -1235 kJ

• A) 53.4°C
• B) 28.1°C
• C) 111°C
• D) 85.7°C
• E) 74.2°C

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