Question

In which of the following sets, the reaction and catalyst are correctly matched?

• A. I, II, III
• B. I, II only
• C. II, III only
• D. I, III only

Hint:

Remember industrial catalysts: Contact Process → \(V_2O_5\), Deacon Process → \(CuCl_2\), Sulfuryl chloride formation → Charcoal.

Answer 1

The Correct Option is A

Concept: Industrial chemistry uses catalysts to speed up reactions without changing equilibrium composition. Several important reactions involving sulphur dioxide and hydrogen chloride use characteristic catalysts. We analyze each reaction independently.

Step 1: Check statement I. Reaction: \[ SO_2+Cl_2\rightarrow SO_2Cl_2 \] This forms sulfuryl chloride. Catalyst used: Activated Charcoal Hence statement I is correct.

Step 2: Check statement II. Reaction: \[ 2SO_2+O_2\rightarrow2SO_3 \] This is contact process for sulfuric acid manufacture. Catalyst used: \[ V_2O_5 \] Vanadium pentoxide accelerates oxidation. Thus statement II is correct.

Step 3: Check statement III. Reaction: \[ 4HCl+O_2\rightarrow2Cl_2+2H_2O \] This is Deacon process. Catalyst used: \[ CuCl_2 \] Copper chloride acts as catalyst. Hence statement III correct.

Step 4: Final conclusion. All three matches are correct. Thus answer is \[ \boxed{A} \]