Question

What mass of sodium chloride would be decomposed by 9.8g of sulphuric acid if 12g of sodium bisulphate and 2.75g of hydrogen chloride were produced in a reaction?

Answer 1

Answer:

According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants

For the chemical reaction: NaCl+H_2SO_4 \rightarrow NaHSO_4+HClNaCl+H

2

SO

4

→NaHSO

4

+HCl

m_{reactant}=m_{products}m

reactant

=m

products

m_{NaCl} + m_{H_2SO_4}= m_{NaHSO_4} + m_{HCl}m

NaCl

+m

H

2

SO

4

=m

NaHSO

4

+m

HCl

x+9.8 = 12 + 2.75x+9.8=12+2.75

x = 4.95\ gx=4.95 g

option C is correct