Question

Вычислите массу фосфорной кислоты, которую можно получить из 310 кг ортофосфата кальция, если массовая доля практического выхода H3PO4 составляет 80%

Answer 1

Дано:
m(Ca3(PO4)2 = 310кг
пр. выход = 80% = 0,8
Найти:
m(H3PO4)пр
Решение:
Ca3(PO4)2 + 3H2SO4 = 3CaSO4 + 2H3PO4
Mr(Ca3PO4) = 310 г/моль
Mr(H3PO4) = 98 г/моль (по реакции 196)
m(H3PO4) = (310кг×196г/моль)÷310г/моль = 196кг
m(H3PO4)пр = 196кг×0,8 = 156,8кг
Ответ: m(H3PO4)пр = 156,8кг

Answer 2

Calculation of the Mass of Phosphoric Acid

To calculate the mass of phosphoric acid (H3PO4) that can be obtained from 310 kg of calcium orthophosphate, we need to consider the practical yield of phosphoric acid. According to the information provided, the practical yield of H3PO4 is 80%.

To calculate the mass of phosphoric acid, we can use the following formula:

Mass of H3PO4 = Mass of calcium orthophosphate * Yield of H3PO4

Substituting the given values:

Mass of H3PO4 = 310 kg * 80% = 248 kg

Therefore, the mass of phosphoric acid that can be obtained from 310 kg of calcium orthophosphate, considering an 80% yield, is 248 kg.