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Question: \(Na_{2}B_{4}O_{7} + X \rightarrow H_{3}BO_{3}\) What is X the reaction?...

Na2B4O7+X→H3BO3Na_{2}B_{4}O_{7} + X \rightarrow H_{3}BO_{3} What is X the reaction?

A

Aqueous solution of NaOH

B

Dilute nitric acid

C

Conc.,H2SO4H_{2}SO_{4} or HCl

D

Water

Answer

Conc.,H2SO4H_{2}SO_{4} or HCl

Explanation

Solution

: Na2B4O7+2HCl+5H2O→2NaCl+4H3BO3Na_{2}B_{4}O_{7} + 2HCl + 5H_{2}O \rightarrow 2NaCl + 4H_{3}BO_{3}

Na2B4O7+H2SO4+5H2O→Na2SO4+4H3BO3Na_{2}B_{4}O_{7} + H_{2}SO_{4} + 5H_{2}O \rightarrow Na_{2}SO_{4} + 4H_{3}BO_{3}