Дано
m(NaOH) = 16 г
Решение
n(NaOH) = m(NaOH) / M(NaOH) = 16 / (23 + 16 + 1) = 16 / 40 = 0.4 моль
MgCl2 + 2NaOH = 2NaCl + Mg(OH)2
n(Mg(OH)2) = 0.5n(NaOH) = 0.5 * 0.4 = 0.2 моль
m(Mg(OH)2) = n(Mg(OH)2)M(Mg(OH)2) = 0.2 * (24 + 2 * 16 + 2 * 1) = 0.2 * 58 = 11.6 г
Ответ: 11.6 г
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
Дано
m(NaOH) = 16 г
Решение
n(NaOH) = m(NaOH) / M(NaOH) = 16 / (23 + 16 + 1) = 16 / 40 = 0.4 моль
MgCl2 + 2NaOH = 2NaCl + Mg(OH)2
n(Mg(OH)2) = 0.5n(NaOH) = 0.5 * 0.4 = 0.2 моль
m(Mg(OH)2) = n(Mg(OH)2)M(Mg(OH)2) = 0.2 * (24 + 2 * 16 + 2 * 1) = 0.2 * 58 = 11.6 г
Ответ: 11.6 г