Determine the quantity of heat added to 2.8 moles of the ideal gas argon if the temperature increases from 75 °C to 225 °C during an isobaric process. Note: The molar specific heats of argon are C_V = 3.0 cal/K·mol and C_P = 5.0 cal/K·mol.

Question

Quizplus · Accepted Answer

We can use the formula for the heat transferred during an isobaric process:

Q = nCpΔT

Where Q is the heat transferred, n is the number of moles, Cp is the molar specific heat at constant pressure, and ΔT is the change in temperature.

Plugging in the given values and using the molar specific heat at constant pressure, we get:

Q = (2.8 mol) (5.0 cal/K·mol) (225 °C - 75 °C)
Q = 2,100 cal

Therefore, the answer is B.

Determine the Quantity of Heat Added to 2