The manufacture of sulphuric acid involves the following steps. Identify X1, X2, X3, and X4 in the reactions involved: (i) X1 + O2(g) → SO2(g) (ii) (iii) X3 + H2SO4 → X4
X1: S, X2: V2O5, X3: SO3, X4: H2S2O7
In the **manufacture of sulphuric acid** (contact process), the following steps occur:
- Step (i): **Sulfur (S)** reacts with **oxygen (O2)** to form **SO2**. Hence, **X1 = S**.
- Step (ii): **SO2** reacts with more **O2** to form **SO3** in the presence of a catalyst, typically **V2O5**. Hence, **X2 = V2O5**.
- Step (iii): **SO3** reacts with **H2SO4** to form **oleum (H2S2O7)**, which is concentrated sulfuric acid. Hence, **X3 = SO3** and **X4 = H2S2O7**.
Therefore, the correct answer is **Option 1**: X1 = S, X2 = V2O5, X3 = SO3, and X4 = H2S2O7.
Important Questions from p-block Elements
Second most abundant element in alloy misch metal is:
Match List-I with List-II:
List-I List-II (A) Gel (I) Hair cream (B) Foam (II) Dust (C) Emulsion (III) Cheese (D) Aerosol (IV) Whipped cream Choose the correct answer from the options given below:
Rate of a reaction changes from 2.48 × 10⁻³ mol⁻¹ sec⁻¹ to 4.96 × 10⁻³ mol⁻¹ sec⁻¹ when concentration of reactant is changed from 0.6 M to 2.4 M respectively, the order of reaction is:
Degree of dissociation, when molar conductivity of X at its concentration C is 24.14 and its limiting molar conductivity is 48.28 will be:
A divalent ion of 'V' (Atomic no. 23) in aqueous solution is:
