NEET
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- NEET
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- Chemistry
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- Redox Reactions
NEET · Chemistry · Redox Reactions
Given below are two statements; one is labelled as Assertion (A)...
Given below are two statements; one is labelled as Assertion (A) and the other is labelled as Reason(R) .
Assertion :- The decomposition of (\mathrm{H}}_{2} \mathrm{O}}_{2}) to form (\mathrm{H}}_{2}\mathrm{O}}_{2}) is an example of disproportionation reaction.
Reason :- The oxygen of peroxide is in () oxidation state and it is converted to zero oxidation state in (\mathrm{O}}_{2}) and -2 oxidation state in (\mathrm{H}}_{2} ).
In the light of the above statements, choose the most appropriate answer from the options given below :
Options
- ABoth (A) and (R) are correct but (R) is not the correct explanation of (A).
- B(A) is correct but (R) is not correct.
- C(A) is not correct but (R) is correct.
- DBoth (A) and (R) are correct and (R) is the correct explanation of (A).
Correct answer
D. Both (A) and (R) are correct and (R) is the correct explanation of (A).
Step-by-step solution
- Assertion (A): Correct. The decomposition of (\mathrm{H}}_{2} \mathrm{O}}_{2}) into (\mathrm{H}}_{2}\mathrm{O}}_{2}) is indeed a disproportionation reaction, where the same element (oxygen) is both oxidized and reduced.
- Reason (R): Correct. In (\mathrm{H}}_{2} \mathrm{O}}_{2}), oxygen has an oxidation state of -1 . During decomposition, some oxygen is reduced to form (\mathrm{H}}_{2}\mathrm{O}}_{2}) (oxidation state 0).
Since the reason correctly explains the assertion, both (A) and (R) are correct, and is the correct explanation of .