At Constant Volume Qv Is Equal to?

q(v) is heat at constant volume and q(p) is heat at constant pressure. Think about the formula ΔU = q+w. ΔU is the change in internal energy of system.

Which of the following is the heat at constant volume QV equal to?

We know that the heat absorbed at constant volume is equal to change in the internal energy i.e., ∆U = qV.

Is QP equal to QV?

qv is heat at a constant volume while qp is heat at a constant pressure. qp is usually measured with a calorimeter while qv can be measured with a bomb calorimeter. qp also equals delta H or enthalpy where pressure is constant. At a constant volume, deltaU = qv, since no work of expansion is being done on the system.