How many moles of H2O are produced when 1 mole of Mg(OH)₂ reacts with 1 mole of H2SO₄ ?
A)1
B)2
C)3
D)4
E)5

Question

Quizplus · Accepted Answer

The balanced chemical equation for the reaction is: 
Mg(OH)₂ + H₂SO₄ → MgSO₄ + 2H₂O 
From the equation, we can see that 1 mole of Mg(OH)₂ reacts with 2 moles of H₂O. Since we have 1 mole of H₂SO₄ which is the limiting reagent, the number of moles of H₂O produced will be equal to 2 moles. Therefore, the answer is (B) 2.

How Many Moles of H2O Are Produced When 1 Mole