Heat evolved in the complete combustion of 1.026 kg sucrose at constant pressure will be<br> — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

Molar mass of sucrose is $342\text{ g/mol}$. Mass is $1.026\text{ kg} = 1026\text{ g}$. Moles = $1026 / 342 = 3.0\text{ moles}$. Total heat evolved = $3 \times 5.65 \times 10^3\text{ kJ} = 16.95 \times 10^3\text{ kJ} = 1.695 \times 10^4\text{ kJ}$.