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Question
A compound is prepared from the mineral colemanite by boiling it with a solution of sodium carbonate. It is a white crystalline solid and used for inorganic qualitative analysis.
Write the reaction that explains borax formation.
Solution
Borax is obtained from its mineral colemanite by boiling it with a solution of sodium carbonate.
\[\ce{\underset{Colemanite}{Ca2B6O11} + \underset{Sodium carbonate}{2Na2CO3}->[boil]\underset{Borax}{Na2B4O7} + \underset{Sodium metaborate}{2NaBO2} + \underset{Calcium carbonate}{2CaCO3 v}}\]
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