qv vs qp

[vicenteruelos3]

What is the difference between qv and qp?

[sahajgill]

Qp is constant pressure while Qv is constant volume

[Rachel Formaker 1E]

Dr. Lavelle also specified that Qv is found using a bomb calorimeter, which keeps volume constant, while Qp is found using a coffee cup calorimeter, which allows gases to escape to keep pressure constant.

[Elizabeth Bamishaye 2I]

Also to add on the previous answers: qv is the heat absorbed or released at constant volume and uses bomb calorimetry; while qp is the heat absorbed or released at constant pressure and gives enthalpy values.

[aaron tang 2K]

Qv is constant volume, Qp is constant pressure. Lavelle used Qv in the example of the bomb calorimeter and Qp in the coffee cup calorimeter.
Qv: heat absorbed or released at constant volume. Qp: heat absorbed or released at constant pressure and gives enthalpy values.