When aldehydes lacking a-hydrogen is treated with concentrated solution of a strong base, Cannizaro reaction takes place. In this reaction, one molecule of aldehyde is oxidised while other is reduced. The widely accepted mechanism isStep IIQ.In certain experim ental condition, rate is found to be proportional to square of concentration of base (OH-).This indicates thata)with change in condition, Step I may become slow, rate determining stepb)dianion intermediate is acting as hydride (H-) donc)Both Step I and Step II occur at comparable rated)mechanism changes with nature of aldehydeCorrect answer is option 'B'. Can you explain this answer?

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Step II

In certain experim ental condition, rate is found to be proportional to square of concentration of base (OH^-).This indicates that

a)
with change in condition, Step I may become slow, rate determining step
b)
dianion intermediate is acting as hydride (H^-) don
c)
Both Step I and Step II occur at comparable rate
d)
mechanism changes with nature of aldehyde

Correct answer is option 'B'. Can you explain this answer?

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When aldehydes lacking a-hydrogen is treated with concentrated solutio...

Formation of dianion involves two moles of HO^- per mole of aldehyde

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When aldehydes lacking a-hydrogen is treated with concentrated solution of a strong base, Cannizaro reaction takes place. In this reaction, one molecule of aldehyde is oxidised while other is reduced. The widely accepted mechanism isStep IIQ.In certain experim ental condition, rate is found to be proportional to square of concentration of base (OH-).This indicates thata)with change in condition, Step I may become slow, rate determining stepb)dianion intermediate is acting as hydride (H-) donc)Both Step I and Step II occur at comparable rated)mechanism changes with nature of aldehydeCorrect answer is option 'B'. Can you explain this answer?

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When aldehydes lacking a-hydrogen is treated with concentrated solution of a strong base, Cannizaro reaction takes place. In this reaction, one molecule of aldehyde is oxidised while other is reduced. The widely accepted mechanism isStep IIQ.In certain experim ental condition, rate is found to be proportional to square of concentration of base (OH-).This indicates thata)with change in condition, Step I may become slow, rate determining stepb)dianion intermediate is acting as hydride (H-) donc)Both Step I and Step II occur at comparable rated)mechanism changes with nature of aldehydeCorrect answer is option 'B'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about When aldehydes lacking a-hydrogen is treated with concentrated solution of a strong base, Cannizaro reaction takes place. In this reaction, one molecule of aldehyde is oxidised while other is reduced. The widely accepted mechanism isStep IIQ.In certain experim ental condition, rate is found to be proportional to square of concentration of base (OH-).This indicates thata)with change in condition, Step I may become slow, rate determining stepb)dianion intermediate is acting as hydride (H-) donc)Both Step I and Step II occur at comparable rated)mechanism changes with nature of aldehydeCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When aldehydes lacking a-hydrogen is treated with concentrated solution of a strong base, Cannizaro reaction takes place. In this reaction, one molecule of aldehyde is oxidised while other is reduced. The widely accepted mechanism isStep IIQ.In certain experim ental condition, rate is found to be proportional to square of concentration of base (OH-).This indicates thata)with change in condition, Step I may become slow, rate determining stepb)dianion intermediate is acting as hydride (H-) donc)Both Step I and Step II occur at comparable rated)mechanism changes with nature of aldehydeCorrect answer is option 'B'. Can you explain this answer?.

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