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  4. Borax is used as a cleansing agent because on dissolving in water, it gives

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Q. Borax is used as a cleansing agent because on dissolving in water, it gives

Rajasthan PMTRajasthan PMT 2010

Solution:

The aqueous solution of borax is alkaline due to hydrolysis and used as a cleansing agent. $ \underset{(borax)}{\mathop{N{{a}_{2}}{{B}_{4}}{{O}_{7}}}}\,+2{{H}_{2}}O\xrightarrow{{}}\underset{(strong\,\,alkali)}{\mathop{2NaOH}}\,+\underset{(weak\,\,acid)}{\mathop{{{H}_{2}}{{B}_{4}}{{O}_{7}}}}\, $