By neutralizing the sulfuric acid solution with ammonia, 1 liter of a solution (density 1.115 g / ml)

By neutralizing the sulfuric acid solution with ammonia, 1 liter of a solution (density 1.115 g / ml) of average salt containing 20% salt was obtained with a yield of 95%. Calculate the amount, mass and volume of ammonia used

1. Let’s compose the reaction equation:

2NH3 + H2SO4 = (NH4) 2SO4;

2. find the mass of the salt solution:

m (solution) = V (solution) * ρ = 1000 * 1.115 = 1115 g;

3.Calculate the mass of the resulting salt:

m ((NH4) 2SO4) = m (solution) * w ((NH4) 2SO4) = 1115 * 0.2 = 223 g;

4. calculate the practical and theoretical amount of ammonium sulfate:

ntract ((NH4) 2SO4) = m ((NH4) 2SO4): M ((NH4) 2SO4);

M ((NH4) 2SO4) = 14 * 2 + 8 + 32 + 4 * 16 = 132 g / mol;

npract ((NH4) 2SO4) = 223: 132 = 1.6894 mol;

ntheor ((NH4) 2SO4) = npract ((NH4) 2SO4): ν = 1.6894: 0.95 = 1.7783 mol;

5.determine the amount and volume of ammonia:

n (NH3) = ntheor ((NH4) 2SO4) * 2 = 1.7783 * 2 = 3.5566 mol;

V (NH3) = n (NH3) * Vm = 3.5566 * 22.4 = 79.67 dm ^ 3.

Answer: 79.67 dm ^ 3.