When 1.14 g of octane (molar mass = 114 g/mol) reacts with excess oxygen in a constant volume calorimeter, the temperature of the calorimeter increases by 10.0°C. The heat capacity of the calorimeter is 6.97 kJ/°C. Determine the energy flow, q (reaction).

Question

Quizplus · Accepted Answer

The energy flow, q (reaction), is calculated using the formula q = -C * ΔT, where C is the heat capacity and ΔT is the temperature change. Here, q = -(6.97 kJ/°C * 10.0°C) = -69.7 kJ. The negative sign indicates that the reaction is exothermic.

When 114 G of Octane (Molar Mass = 114 G/mol) Reacts