p-Block elementsHard

Question

Borax is prepared by treating colemanite with :

Options

A.NaNO₃

B.NaCl

C.Na₂CO₃

D.NaHCO₃

Solution

Ca₂B₆O₁₁ + Na₂CO₃ → 2CaCO₃ ↓ + Na₂B₄O₇ + 2NaBO₂

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