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Question
Copy and complete the following table.
Column 3 has the names of gases to be prepared using the substance you enter in column 1, along with dilute or concentrated sulphuric acid, as indicated in column 2.
| Column 1 | Column 2 | Column 3 |
| Substance reacted with acid | Dilute or concentrated sulphuric acid | Gas |
| Hydrogen | ||
| Carbon dioxide | ||
| Only chlorine |
Write the equation for the laboratory preparation of :
(i) Sodium sulphate using dilute sulphuric acid.
(ii) Lead sulphate using dilute sulphuric acid.
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Solution
| Column 1 | Column 2 | Column 3 |
| Substance reacted with acid | Dilute or concentrated sulphuric acid | Gas |
| Metal | Dilute sulphuric acid | Hydrogen |
| Carbonate | Dilute sulphuric acid | Carbon dioxide |
| Metal chlorides | Conc. sulphuric acid | Only chlorine |
Equation are :
(i) \[\ce{2NaOH + H2SO4 -> Na2SO4 + 2H2O}\]
(ii) \[\ce{Pb(NO3)2 + H2SO4 -> PbSO4 v + 2HNO3}\]
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