Question

Mg(OH)2 + 2HCl → 2H(OH) + MgCl2

How many moles of water are produced by the reaction of magnesium hydroxide, Mg(OH)2, and 9.8 moles of hydrochloric acid, HCl?

Answer 1

Looking at the balanced chemical equation:

Mg(OH)2 + 2HCl → 2H2O + MgCl2

We can see that for every 2 moles of hydrochloric acid (HCl) that react, 2 moles of water (H2O) are produced.

Therefore, if 2 moles of HCl produce 2 moles of H2O, then 9.8 moles of HCl will produce:

(9.8 mol HCl) x (2 mol H2O/2 mol HCl) = 9.8 mol H2O

So, 9.8 moles of hydrochloric acid reacting with magnesium hydroxide will produce 9.8 moles of water.

Step-by-step explanation: