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A certain salt X gives the following res...

A certain salt X gives the following results:
(i) Its aqueous solution is alkaline to litmus.
(ii) It swells up to a galssy material Y on strong heating.
(iii) When conc. `H_(2)SO_(4)` is added to a hot solution of X, white crstals of an acid Z separate out.
Write equations for all the above reactions and identify x,y and Z.

Text Solution

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The aqueous that the salt 'X' is Borax `(Na_(2)B_(4)O_(7).10H_(2)O)`
(i) Borax sells in size upon strng heating and loses molecules of water of cyrstallisation to form solid (Y)
`Na_(2)B_(4)O_(7).10H_(2)Ooverset("Heat")rarrNa_(2)B_(4)O_(7)+10H_(2)O`
(iii) Upon reacting with conc. `H_(2)SO_(4)`, borax forms boric acid `(H_(3)BO_(3))`. when crystallised from the solution, it is in the form of white crystals (Z)
`Na_(2)B_(4)O_(7)+H_(2)SO_(4)+5H_(2)OrarrNa_(2)SO_(4)+4H_(3)BO_(3)`
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