KEAM 2022 Physics and Chemistry Solved Paper

Question : 83 of 120

Marks: +1, -0

The standard enthalpy of formation of CH4(g),CO2(g) and H2O(l) are −75‌kJ‌mol−1,−393‌kJ‌mol−1 and −286‌kJ‌mol−1 respectively. The amount of heat liberated (in kJ ) when 3.2g of methane gas is burnt under standard conditions is