InterviewSolution
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InterviewSolution
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Arrange the following compounds in order of decreasing acidity: A. `III gt I gt II gt IV`B. `IV gt III gt I gt II`C. `II gt IV gt I gt III`D. `I gt II gt III gt IV` |
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Answer» Correct Answer - A Electron withdrawing groups will increase the acidic character while electron releasing group will decrease the acidic character. Further R- effect is stronger than I-effect. Here, `-Cl` has `-I` effect and `+R` effect, `-CH_(3)` has weak `+I` effect, `-NO_(2)` has `-I` and `-R` effect and `-OCH_(3)` has `-I` and `+R` effect. Thus correct order is : `III gt I gt I gt IV`. |
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