Question

2005
1. The preparation of lead sulphate from lead
carbonate is a two-step process. (lead sulphate
cannot be prepared by adding dilute sulphuric
acid to lead carbonate.)
(a) What is the first step that is required
to prepare lead sulphate from lead
carbonate ?
(b) Write the equation for the reaction that will
take place when this first step is carried
out.
(C) Why is the direct addition of dilute
sulphuric acid to lead carbonate an
impractical method of preparing lead
sulphate ?​

Answer 1

Answer:

1.

a) The first step that is required to prepare lead sulphate from lead carbonate is to convert lead carbonate to lead nitrate by reacting it with dilute

nitric acid.

b) PbCO3 + 2 HNO3 → Pb(NO3)2 + CO2 + H2O

c) The direct addition of sulphuric acid to lead carbonate is an impractical method since the formed insoluble lead sulphate does not allow the reaction between acid and salt.

Hope this would help you!!!