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Carboxylic acid from a Grignard reagent and CO2 (dry ice)

This type of question, asked 6 times: 9 May 2024 S1, 22 Apr 2025 S1, 22 Apr 2025 S2, 26 Apr 2025 S2, 18 Apr 2026 S2, 19 May 2026 S2. All 6 questions below, oldest first.

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  1. Question 1

    9 May 2024 S1

    70
    Identify the product 'B' in the following reaction. CH3MgBr→dry iceA→H2O/dil. HClBCH_3MgBr\xrightarrow{\text{dry ice}}\text{A}\xrightarrow{H_2O/dil.\,HCl}B

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  2. Question 2

    22 Apr 2025 S1

    97
    Identify the product ' BB ' in following reaction. Dry ice → dry ether CH3MgBrA→H3O+B\xrightarrow[\text{~dry ether~}]{CH_{3}MgBr}A\xrightarrow{H_{3}O^{+}}B

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  3. Question 3

    22 Apr 2025 S2

    53
    In a reaction, (CH3)2CHMgBr+CO2→ ether  dry A→ dilHCl  H.OH B\left( CH_{3} \right)_{2}CHMgBr +CO_{2}\xrightarrow[\text{~ether~}]{\text{~dry~}}A\xrightarrow[\text{~}\text{dilHCl~}]{\text{~H.OH~}}B. Find the product ' B ' of above reaction.

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  4. Question 4

    26 Apr 2025 S2

    95
    Identify the product formed in the following reaction. CH3CH2MgBr→ ii) dil. HCl  i) Dry ice/ dry ether CH_{3}CH_{2}MgBr\xrightarrow[\text{~ii) dil. HCl~}]{\text{~i) Dry ice/ dry ether~}} Product

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  5. Question 5

    18 Apr 2026 S2

    41
    Identify the product obtained when isopropyl magnesium chloride in dry ether reacts with dry ice forming a complex, hydrolysed further.

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  6. Question 6

    19 May 2026 S2

    44
    Which of the following compounds reacts with Grignard's reagent and hydrolyzes further to form carboxylic acid?

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