Give balanced equations to prepare lead sulphate from lead carbonate.

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Solution

The reaction involves two steps:
The first step involves the preparation of lead nitrate by reacting insoluble lead carbonate with dilute nitric acid.
${PbCO}_{3} (s) + 2 {HNO}_{3} (aq) \to Pb {({NO}_{3})}_{2} (s) + H_{2} O (l) + {CO}_{2} (g) Lead carbonate Nitric acid Lead nitrate Water Carbon dioxide$
Lead nitrate then reacts with sulphuric acid to produce lead sulphate.
$Pb {({NO}_{3})}_{2} (s) + H_{2} {SO}_{4} (aq) \to {PbSO}_{4} ↓ (s) + 2 {HNO}_{3} (aq) Lead nitrate Sulphuric acid Lead sulphate NItric acid$

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Q. 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.)
(i) What is the first step that is required to prepare lead sulphate from lead carbonate?
(ii) Write the equation for the reaction that will take place when this first step is carried out.
(iii) Why is the direct addition of dilute sulphuric acid to lead carbonate an impractical method of preparing lead sulphate?

Q. Give the equation for the preparation of each of the following salts from the starting material given.
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(ii) Iron (III) chloride from Iron.
(iii) Potassium sulphate from potassium hydroxide solution.
(iv) Lead chloride from lead carbonate (two equations).

Q. Write equations for the laboratory preparation of the following salts, using sulphuric acid:
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(ii) copper sulphate from copper.
(iii) lead sulphate from lead nitrate.
(iv) sodium sulphate from sodium carbonate.

(h) Name from the list of the substances given below, the substance which you would use to prepare the salts given below:
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(iii) Sodium sulphate
(iv) Lead sulphate

Q. From the list of the substances given, name the substances which you would use to prepare each of the following salts:
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