Question

When heat is given to a gas in an isothermal change, the result will be ______. 

Options

• external work done

• the rise in temperature

• increase in internal energy

• external work done and also rise in temperature

Answer 1

When heat is given to a gas in an isothermal change, the result will be external work done.

Explanation:

When there is an isothermal change, the temperature stays the same, Hence ΔU = 0.