QUESTION 1 [10 MARKS] a) An experiment is carried out the reaction between solid sodium carbonate with aqueous
hydrogen sulphate to form aqueous sodium sulphate, carbon dioxide and water.

Na2CO3
H2SO4 ->
Na SO4 +
CO2 + H2O

i) Rewrite the given equation by adding an appropriate state symbols.

[1 mark]
ii) Calculate the number of moles of hydrogen sulphate required to react with 2.12 g of sodium
carbonate.

[2 marks]

iii) Calculate the concentration of sodium carbonate solution which prepared from 2.12 g of
sodium carbonate in 250.0 cm of volumetric flask.

[2 marks]