What mass of a 10% nitric acid solution should be reacted with ammonia to obtain 320 g of ammonium nitrate?

univerkov | March 9, 2021 | education

We draw up the reaction equation and place the coefficients in it: HNO3 + NH3 = NH4NO3.
1) Using PS, we calculate the molar mass of ammonium nitrate: 14 + 1 * 4 + 14 + 16 * 3 = 80.
2) By dividing the mass of ammonium nitrate by its molar mass, we determine the amount of salt substance: 320/80 = 4 mol.
3) According to the reaction equation, there is one mole of nitric acid for one mole of ammonium nitrate. This means that the amount of acid substance is 4 mol.
4) The molar mass of nitric acid is: 1 + 14 + 16 * 3 = 63.
5) The mass of nitric acid is: 63 * 4 = 252.
6) The mass of the dissolved substance of nitric acid is: 252 * 10/100 = 25.2 g – the answer.

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