JEE PYQ: P Block Elements Question 69
Question 69 - 2019 (10 Jan Shift 2)
Among the following reactions of hydrogen with halogens, the one that requires a catalyst is:
(1) $\text{H}_2 + \text{I}_2 \to 2\text{HI}$
(2) $\text{H}_2 + \text{Cl}_2 \to 2\text{HCl}$
(3) $\text{H}_2 + \text{Br}_2 \to 2\text{HBr}$
(4) $\text{H}_2 + \text{F}_2 \to 2\text{HF}$
Show Answer
Answer: (1)
Solution
The reaction between $\text{I}_2$ and $\text{H}_2$ requires catalyst, whereas all other halogens react with $\text{H}_2$ without the requirement of a catalyst.
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