Question

In the equation Al2(SO4)3 + 3Ca(OH)2-> 3CaSO4 + 2AI(OH)3, what is the mole ratio of calcium hydroxide to aluminum hydroxide?

Answer 1

3:2

Explanations:

Before we can determine the mole ratio of compounds in a chemical reaction, the reaction must be balanced first.

Given the balanced chemical reactions;

`Al_2\left(SO_4\right)_3+3Ca\left(OH\right)_2\rightarrow3CaSO_4+2Al\left(OH\right)_3`

Since the given reaction is balanced, we will determine the number of atom of the calcium hydroxide and aluminium hydroxide in the reaction.

There are 3 moles of calcium hydroxide at the reactant and 2 moles of aluminium hydroxide in the reaction, hence the mole ratio of calcium hydroxide to aluminum hydroxide is 3:2