A) its aqueous solution contains equal amount of weak acid and its salt
B) it is easily available
C) its aqueous solution contains equal amount of strong acid and its salt
D) none of these.
Correct Answer: A
Solution :
[a] : Borax is used as a buffer as it contains weak acid and its salt with strong base. \[N{{a}_{2}}{{B}_{4}}{{O}_{7}}+7{{H}_{2}}O\xrightarrow[{}]{{}}2Na[B{{(OH)}_{4}}]+2{{H}_{3}}B{{O}_{3}}\]
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