Select the correct statements.
(1) Ferric bromide is obtained when chlorine gas is bubble through a solution of ferrous bromide
(2) Sodium sulphate is obtained when `SO_(2)(g) , H_(2)O(g)` and air are passed over heated sodium chlorine
(3) `H_(2)S` gas is liberated when aluminium suphide becomes damp.

Options

A. statements 1 and 2 are correct
B. statement 3 alone is correct
C. statements 2 and 3 are correct
D. all the statements are correct

Answer

To analyze the given statements, let's break down each one step by step:

### Statement 1: Ferric bromide is obtained when chlorine gas is bubbled through a solution of ferrous bromide.

1. **Identify the reactants**: The reactants are ferrous bromide (FeBr2) and chlorine gas (Cl2).
2. **Write the reaction**: When chlorine gas is bubbled through a solution of ferrous bromide, it oxidizes ferrous ions (Fe²⁺) to ferric ions (Fe³⁺) and reduces itself to bromine (Br2).
\[ 2 \text{FeBr}_2 + \text{Cl}_2 \rightarrow 2 \text{FeBr}_3 + \text{Br}_2 \]
3. **Conclusion**: The product formed is ferric bromide (FeBr3), which confirms that this statement is correct.

### Statement 2: Sodium sulphate is obtained when SO2(g), H2O(g), and air are passed over heated sodium chloride.

1. **Identify the reactants**: The reactants are sulfur dioxide (SO2), water vapor (H2O), and sodium chloride (NaCl).
2. **Write the reaction**: When these reactants are heated together, a reaction occurs that can produce sodium sulfate (Na2SO4) along with other products.
\[ 2 \text{NaCl} + \text{SO}_2 + 2 \text{H}_2\text{O} + \text{O}_2 \rightarrow \text{Na}_2\text{SO}_4 + 2 \text{HCl} \]
3. **Conclusion**: The formation of sodium sulfate confirms that this statement is also correct.

### Statement 3: H2S gas is liberated when aluminium sulphide becomes damp.

1. **Identify the reactant**: The reactant is aluminum sulfide (Al2S3).
2. **Write the reaction**: When aluminum sulfide reacts with water, it produces aluminum hydroxide and hydrogen sulfide gas.
\[ \text{Al}_2\text{S}_3 + 6 \text{H}_2\text{O} \rightarrow 2 \text{Al(OH)}_3 + 3 \text{H}_2\text{S} \]
3. **Conclusion**: The liberation of H2S gas confirms that this statement is also correct.

### Final Conclusion:
All three statements are correct based on the reactions described.