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JEE Main202229 Jun 2022Evening ShiftChemistryp Block Elements (Group 13 & 14)Actual

Aqueous solution of which of the following boron compounds will be strongly basic in nature?

Options

  1. ANaBH 4
  2. BLiBH 4
  3. CB 2 H 6
  4. DNa 2 B 4 O 7

Correct answer

D. Na 2 B 4 O 7

Step-by-step solution

Na 2 B 4 O 7 gives H 3 BO 3 and NaOH (strong base) in water. So, it is a salt of strong base and weak acid. So, its solution will be strongly basic in water. It will have very high pH. Lithium borohydride and sodium borohydride reacts with water to produce hydrogen. And diborane act as lewis acid.

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