Предмет: Химия, автор: marijalanina

какой объём воды и массу и гидроксида натрия нужно взять,чтобы приготовить 180г 15%-го раствора? плотность воды 1г/мл

Ответы

Автор ответа: Platinum15

w = m(NaOH) / m(NaOH) + m(H2O)
0.15 = x/180
x = 27 г - масса NaOH
180 - 27 = 153 г - масса воды
V(H2O) = m/p = 153/1= 153 мл

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