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When aqueous solution of borax is acidified with hydrochloric acid, a white crystalline solid is formed which is soapy in touch

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asked Oct 12, 2017 in Chemistry by jisu zahaan (28,760 points) ● 26 ● 374 ● 809

When aqueous solution of borax is acidified with hydrochloric acid, a white crystalline solid is formed which is soapy in touch .Is this solid acidic or basic in nature? Explain. 

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answered Oct 12, 2017 by sforrest072 (157,439 points) ● 60 ● 409 ● 937
selected Oct 13, 2017 by sanjeev
 
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When an aqueous solution of borax is acidified with HCl boric acid is formed
Na2B4O7 + 2HCl + 5H2O → 2NaCl + 4H3BO3 (BORIC ACID)
Boric acid is not a proticacid it does not give H⁺ ion accepts a pair of electrons
and acts as a Lewis acid.

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