# Calculate the mass of salt obtained by the interaction of 200 g of a solution of sulfuric acid with a mass fraction of 20%

June 30, 2020 | Education

| **Calculate the mass of salt obtained by the interaction of 200 g of a solution of sulfuric acid with a mass fraction of 20% with a solution of sodium hydroxide**

Decision:

M (H2SO4) = 98 g / mol;

M (Na2SO4) = 142 g / mol.

We find the mass of sulfuric acid:

m (H2SO4) = 200. 0.2 = 40 g.

The reaction equation has the form:

40 g x g

H2SO4 + 2NaOH = Na2SO4 + 2H2O

98 g 142 g

We calculate the mass of salt from the proportion, we get:

40: x = 98: 142;

x = (40.142) / 98 = 57.96 g or 58 g.

Answer: 58 g.

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