Question

How many moles of potassium nitrate are produced when two miles of potassium phosphate react with two moles of aluminum nitrate?

Answer 1

`6` moles

Explanation:

First write balanced chemical equation for this ion-exchange reaction :

`K_3PO_4+Al(NO_3)_3->3KNO_3+AlPO_4`.

This balanced chemical equation represents the mole ratio in which the chemicals combine and form products.

So clearly 1 mole of each reactant combines to form 3 moles potassium nitrate and 1 mole aluminium phosphate.

Hence, by ratio and proportion, 2 moles of each reactant will produce 6 moles potassium nitrate and 2 moles aluminium phosphate.