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Assertion : Iron(III) catalyses the reac...

Assertion : Iron(III) catalyses the reaction between iodide and persulphate ions.
Reason : Transition metals act as catalysts.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true and reason not is the correct explanation of assertion.

C

If assertion is trun but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B
Catalytic activity of transition metals is due to their ability to adopt multiple oxidation states and form complezes. Iron (III) catalyses the reaction between iodide and persulphate ions.
`2I^(-)+S_2O_8^(2-)to I_2+3SO_4^(2-)`
This can be explained as :
`2Fe^(3+)+2I^(-)to 2Fe^(2+)+I_2`
`2Fe^(2+)+S_2O_8^(2-)to 2Fe^(3+)+2SO_4^(2-)`
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