Three moles of ideal gas at 300 K expand isothermally from to against constant opposing pressure of 80 kPa. Amount of heat transferred is J.

Question

Three moles of ideal gas at 300 K expand isothermally from  to  against constant opposing pressure of 80 kPa. Amount of heat transferred is  J.

Canvas Classes · Accepted Answer

Strategy:
 In an isothermal expansion of an ideal gas, . By the First Law, heat transferred () is equal to the magnitude of work done by the system ().

Step 1: Calculate Work against constant pressure

Given: .
, .
.
.

Step 2: Determine Heat ()
Since , .
The gas absorbs  of heat from the surroundings to compensate for the work done during expansion.

More questions from Thermodynamics