Find the mass of salt obtained by passing 4.48 liters of sulfur gas through a potassium hydroxide solution.

1. We write down the equation of the proceeding reaction:

SO3 + 2KOH = K2SO4 + H2O;

2.Calculate the chemical amount of sulfuric gas:

n (SO3) = V (SO3): Vm = 4.48: 22.4 = 0.2 mol;

3.determine the amount of potassium sulfate:

n (K2SO4) = n (SO3) = 0.2 mol;

4.find the mass of the resulting salt:

m (K2SO4) = n (K2SO4) * M (K2SO4);

M (K2SO4) = 39 * 2 + 32 + 4 * 16 = 174 g / mol;

m (K2SO4) = 0.2 * 174 = 34.8 g.

Answer: 34.8 g.