Question

15. (0)
How much sulphuric acid containing 90% H2SO4
by weight is needed for the production of 1000 kg
of hydrochloric acid containing 42% HCI by
weight in the following reaction?
If the above reaction is carried out by mixing 11.7
g of pure NaCl and 10g pure H2SO4, find the
limiting reactant.​

Answer 1

Answer:

Balanced equation:

2NaCl + H2SO4 → Na2SO4 + 2HCl

1mol H2SO4 produces 2 mol HCl

You want to produce 42/100% * 1000 kg HCl = 420 kg of HCl (100% basis )

Molar mass H2SO4 = 98 g/mol

Molar Mass HCl = 36.5 g/mol

98 g H2SO4 will produce 36.5*2 = 73 g HCl

Mass of H2SO4 required to produce 420 kg HCl

Mass = 420 kg HCl * 98 g / 73 g = 563.8 kg H2SO4 100% basis

Mass of 90% solution = 100%/90% * 563.8 kg= 626.5 kg required

Explanation: