To 126 g of a 25% nitric acid solution, potassium hydroxide was added in a stoichiometric ratio.

| September 11, 2021 | education

To 126 g of a 25% nitric acid solution, potassium hydroxide was added in a stoichiometric ratio. Calculate the mass of the salt formed.

1. We calculate by the formula the mass of the solute (nitric acid).

2. We make the equation of the reaction between nitric acid and potassium hydroxide.

We determine the quantitative ratios of the initial substances and reaction products (nitric acid and salt – potassium nitrate). From the equation you can see that they react as 1: 1 (1 mol of nitric acid and 1 mol of potassium nitrate).

3. Find the amount of nitric acid substance (0.5 mol).

If the amount of acid substance is 0.5 mol, then the amount of salt substance is 0.5 mol.

4. Find the mass of potassium nitrate by the formula.

5. Answer: mass of salt = 66.5 g.



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