Please answer each and explain answer Which of the following would have the larg

Question

Please answer each and explain answer Which of the following would have the largest K_eq for the formation of the hydrate? 1) CH_3COCH_3 3) CH_3COCHCl_2 2) CH_3COCH_2Cl 4) CH_3COCCl_3 Cyclic acetals, such as the one shown below, are particularly useful as "protecting" groups for ketones or aldehydes. Such an acetal is inert to each of the following reagents except one. Which one? 1) CH_3 MgBr 2) NaNH_2 3) H_2SO_4, H_2O LiAlH_4 Which reagent below reacts with benzaldehyde to form an imine? 1) (CH_3)_3N 2) C_6H_3NH_2 3) (CH_3)_2NH Which of the following compounds is the product of the reaction between acetone and hydroxylamine? CH_3COCH_3 + H_2NOH rightarrow

Explanation / Answer

1. 4

Hydrate formation of aldehyde and ketone is nucleophillic adddition reaction. The reaction is reversible in nature and forward direction is favoured when electrophillicity of carbonyl group is high. Out of given options the highest electrophillicity would be shown by compound in option 4 as it has the strongest electron withdrawing group attached to carbonyl carbon.

2. 3

Acetals are quiet stable in neutral and basic medium. However they are unstable in acidic medium. So acidification of water would make them unstable in water

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