Question

How much heat must be added to 150 grams of ice at 0°C to form water at 0°C?

Answer 1

Given:

The mass of the ice is m = 150 g

Required: The heat required to convert ice to water at zero degrees Celsius.

Explanation:

The heat can be calculated by the formula

$Q=mL_f$

Here, the latent heat of fusion is

$L_f=\text{ 80 cal/g}$

On substituting the values, the heat will be

$\begin{gathered} Q=150\text{ g}\times\frac{80cal}{g} \\ =12000\text{ cal} \end{gathered}$

Final Answer: The heat required to convert ice to water at zero degrees Celsius is 12000 calories.