Answer to Question #148450 in General Chemistry for Chen

Question

Magnesium hydroxide was reacted with hydrochloric acid. The weight of magnesium hydroxide was 1500 grams. What was the weight of magnesium chloride being produced from the reaction?

Answer 1

Mg (OH) 2 + 2HCl = MgCl2 + 2H2O

n (Mg (OH) 2) = m / M = 1500/58 = 25,86 моль

M (Mg (OH) 2) = 24 + 16 * 2 + 1 * 2 = 58 г / моль

n (MgCl2) = 25,86 моль

т = п * М

M (MgCl2) = 24 * 1 + 35,5 * 2 = 95 г / моль

m (MgCl2) = 25,86 * 95 = 2457 г.

Ответ: 2457 г