1)

After completion of the reactions (i and II), the organic compound (s) in reaction mixtures is (are )

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A) Reaction I:P and reaction II: P

B) Reaction I:U , acetone and Reaction II:Q , acetone

C) Reaction I: T, U, acetone and Reaction II:P

D) Reaction I: R acetone and raection II:S , acetone

Answer:

Option C

Explanation:

Plan  when acetone reacts with Br2 in Basic medium , bromoform is formed

 Reaction I

 $CH_{3}COOCH_{3}(  1 mol, 1/3 mol )+3Br_{2}( 3 mol, 1 mol  )+4NaOH\rightarrow$

                                                  $ CH_{3}COONa+CHBr_{3}+3NaBr+3H_{2}O$

                                                                 (U)              (T)

 when CH3COCH3 are Br2 are in equimolar quantity , all the Br2 (limiting reactant)  is converted into desired products and 2/3 mole of CH3COCH3 remains unreacted, being in excess

 when acetone  reacts with Br2 in acidic medium, there is monobromination of acetone

 Reaction II

$CH_{3}COCH_{3}+Br_{2}$   $\underrightarrow{CH_{3}COOH}$ 

                                                                            $CH_{3}COCH_{2}Br+HBr$ 

   1 mol                 1 mol                                         (p)

 CH3COCH3 and Br2 react 1:1 mole ratio and (P) is formed

 in reaction I, (U) and (T) are formed and acetone (reactant) remains  unreacted

 In reaction II, (P) is formed