To a solution containing 22.4 g of potassium hydroxide was added a solution containing 21.9 g

| July 6, 2021 | education

To a solution containing 22.4 g of potassium hydroxide was added a solution containing 21.9 g of hydrogen chloride. How much salt was formed?

KOH + HCl = KCl + H2O.
1) Find the molar mass of potassium hydroxide according to the periodic table: 39 + 16 + 1 = 56.
2) Find the amount of the hydroxide substance. To do this, we divide its mass by molar mass: 22.4 / 56 = 0.4 mol.
3) Find the molar mass of hydrochloric acid: 1 + 35.5 = 36.5.
4) Find the amount of hydrochloric acid substance: 21.9 / 36.5 = 0.6 mol.
Potassium hydroxide is in short supply. The calculation is carried out on it.
5) According to the reaction equation, one mole of potassium hydroxyl accounts for one mole of potassium chloride. This means that the amount of potassium chloride substance is 0.4 mol.
6) Mass of potassium chloride: 0.4 * (39 + 35.5) = 0.4 * 74.5 g – the answer.



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