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NTA Abhyas JEE Main2020Chemistrys Block ElementsPractice

Among the following, the group of molecules that undergoes rapid hydrolysis is

Options

  1. AS F 6 , A l 2 C l 6 , S i M e 4
  2. BB C l 3 , S F 6 , S i C l 4
  3. CB C l 3 , S i C l 4 , P C l 5
  4. DS F 6 , A l 2 C l 6 , S i C l 4

Correct answer

C. B C l 3 , S i C l 4 , P C l 5

Step-by-step solution

B C l 3 , S i C l 4 and P C l 5 get radily hydrolysed to give orthoboric, orthosilicic and phosphoric acid respectively. B C l 3 + 3 H 2 O → H 3 B O 3 + 3 H C l S i C l 4 + 4 H 2 O → H 4 S i O 4 + 4 H C l P C l 5 + H 2 O → P O C l 3 + 2 H C l → H 2 O e x c e s s H 3 P O 4 + H C l

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