Silver nitrate solution was added to 730 g of a 15% hydrochloric acid solution.

| September 16, 2021 | education

Silver nitrate solution was added to 730 g of a 15% hydrochloric acid solution. Calculate the mass of the precipitated sediment.

HCl + AgNO3 = HNO3 + AgCl.
The precipitate is silver chloride.
Working formula: W = (mr.v – wa / mr – pa) * 100%.
1) Calculate the mass of the substance of hydrochloric acid in its solution. To do this, we express from the working formula the mass of the solute: 730 * 15/100 = 109.5 g.
2) Find the amount of hydrochloric acid substance. To do this, we calculate the molar mass according to the periodic table: 1 + 35.5 = 36.5. Then we divide the mass of the substance by the molar mass: 109.5 / 36.5 = 3 mol.
3) According to the reaction equation, 1 mole of hydrochloric acid accounts for one mole of silver chloride. This means that the amount of sediment substance is 3 mol.
4) Sludge mass: 3 * 143 = 429g – answer.



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