# To a solution containing 10 g of sodium hydroxide, 30 g of a 30% solution of sulfuric acid

To a solution containing 10 g of sodium hydroxide, 30 g of a 30% solution of sulfuric acid was added. What salt and how much was formed?

When sodium hydroxide and sulfuric acid react, sodium sulfate and water are formed.
Reaction equation: 2NaOH + H2SO4 = Na2SO4 + 2H2O.
1) Molar mass of sodium hydroxide: 23 + 1 + 16 = 40.
2) The amount of sodium hydroxide substance: 10/40 = 0.25 mol.
3) The mass of the dissolved substance of sulfuric acid: 30 * 30/100 = 9g.
4) Molar mass of sulfuric acid: 1 * 2 + 32 + 4 * 16 = 98.
5) Amount of sulfuric acid substance: 9/98 = 0.09 mol.
Lack of sulfuric acid. The calculation is carried out on it.
6) According to the reaction equation, the amount of sodium sulfate substance is 0.09 mol.
7) Mass of sodium sulfate: 0.09 * 142 = 12.78 g – answer. One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.