Question

The heat of combustion of carbon to co2 is -393.5 kj/mol. The heat released upon formation of 35.2 g of co2 from carbon and oxygen gas is

Answer 1

Explanation:

The heat of combustion of carbon to CO2 is -395.5 kJ/mol. The heat released upon the formation of 35.2 g CO2 from carbon and oxygen gas is. -315 kJ. +315 kJ.

Answer 2

Answer:

C+O2→CO2ΔH=−393.5kJ/mol

∵ 44gm of CO2 form by which heat released =−393.5kJ

∴ 1 gm of CO2 form by which heat released = −393.5/44

∴ 35.2 gm (given) of CO2 form by which heat released

=−393.5/44×35.2=−315kJ.