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03/01/2022 1:48 pm
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Which statement is not true about potash alum?
(a) On heating it melts and loses its water of crystallization.
(b) Its aqueous solution is basic in nature.
(c) It is used in dyeing industries.
(d) Its empirical formula isKAl(SO4)2.12H2O.
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03/01/2022 1:50 pm
Correct answer: (b) Its aqueous solution is basic in nature.
Explanation:
Alum form acidic solution due to hydrolysis of Al3+.