Question

0.562 g of graphite is placed in a calorimeter with excess oxygen at 25.00 °C and 1 atm

pressure. The graphite is ignited and burns completely to form CO2 as shown below:

C (graphite) + O2 → CO2 (g)

After the completion of the reaction, the calorimeter temperature rises to 25.90 °C. The heat

capacity of the calorimeter is found to be 20.7 kJ/°C. Based on this information calculate the

heat of the reaction.

Answer 1

Answer:

223.5 KJ is the right answer.

Explanation:

Refer attachment for explanation!!!

Here combustion occurs. Heat of combustion is for 1 mole. Hence we have to express heat for 0.562 g Carbon in terms of 1mole of Carbon.