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 q = nCpΔT to calculate the quantity of heat added, where n is the number of moles, Cp is the molar specific heat at constant pressure, and ΔT is the change in temperature.

In this case, n = 2.8 mol, Cp = 5.0 cal/K·mol (since the process is isobaric), and ΔT = 225 °C - 75 °C = 150 °C.

Plugging these values into the formula, we get:

q = (2.8 mol)(5.0 cal/K·mol)(150 °C) = 2100 cal

Therefore, the correct choice is B.

Determine the Quantity of Heat Added to 2