A sample of ammonium chloride dissolves in water,absorbing heat from the surrounding water and causing the temperature to drop by 20 °C.If the heat change for the reaction is +300 J,what is the heat change for the surrounding water?

Question

Quizplus · Accepted Answer

The heat change for the surrounding water is the opposite of the heat change for the reaction. Since the reaction absorbs heat (+300 J), the surrounding water loses that amount of heat, making the heat change for the water -300 J.

A Sample of Ammonium Chloride Dissolves in Water,absorbing Heat from the Surrounding