# Latent Heat

Written by Jerry Ratzlaff on . Posted in Thermodynamics

## Latent Heat

Latent heat ( $$L$$ ) is the energy absorbed or released by a substance during a constant temperature or phase change from a solid to liquid, liquid to gas or vise versa.

### Latent Heat Formula

$$latent \; heat \;=\; \frac { energy \; transfered } { mass \; of \; the \; substance }$$

$$L = \frac{Q}{m}$$

Where:

$$L$$  = latent heat of a substance

$$Q$$ = amount of energy transferred for the phase change

$$m$$ = mass of the substance

Solve for:

$$Q = mL$$

Tags: Equations for Heat