# What is the formula of potassium phosphate in grams/mole?

Dec 27, 2015

The formula of potassium phosphate is ${K}_{3} P {O}_{4}$ .
Its relative formula mass is $212.2663 g m o {l}^{-} 1$ .

#### Explanation:

The formula mass - which I believe is what you were looking for in the first place - can be found by adding up the relative molecular masses of each species in the formula unit.

$3 \left(39.0983\right) + 30.9738 + 4 \left(15.999\right) = 212.2663 g m o {l}^{-} 1$