# Is cooling hot water an exothermic process or an endothermic process?

##### 1 Answer
Feb 11, 2017

Exothermic Process

#### Explanation:

Hot water will lose (give off) heat energy to cool down. Hence, it is an exothermic process.

The amount of heat lost will be

$q = m c \Delta T$

$q$ = the heat transferred to the surroundings
$m$ = mass of water
$c$ = specific heat capacity of water = 1.86J/(g.°C)
$\Delta T$ = change in temperature