In a bomb calorimeter, the heat evolved during the combustion of a fuel directly measures which ther — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

A bomb calorimeter is a sealed, rigid steel vessel. Because its volume cannot change, $\Delta V = 0$, meaning no expansion work is done ($w=0$). Therefore, the heat measured at constant volume ($q_v$) strictly equals the internal energy change ($\Delta U$).