Question

If a beaker of water and a beaker of acetic acid are at the same elevated temperature, which will cool more quickly to room temperature? Support your answer.

Answer 1

The beaker of acetic acid will cool more quickly.

The specific heat capacity of acetic acid is about half that of water.
Thus, it takes twice as much heat gain (or loss) in acetic acid to cause a given change in temperature.
If everything else is constant and heat is being lost at the same rate, the temperature of the acetic acid should drop twice as fast as that of water.