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qv vs qp

Posted: Fri Jan 12, 2018 2:18 pm
by vicenteruelos3
What is the difference between qv and qp?

Re: qv vs qp

Posted: Fri Jan 12, 2018 2:19 pm
by sahajgill
Qp is constant pressure while Qv is constant volume

Re: qv vs qp

Posted: Fri Jan 12, 2018 2:24 pm
by 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.

Re: qv vs qp

Posted: Fri Jan 12, 2018 2:28 pm
by 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.

Re: qv vs qp

Posted: Sun Jan 14, 2018 5:34 pm
by 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.