Give reasons:At high temperatures the sodium sulphate or phtassium sul – InterviewSolution

1.	Give reasons:At high temperatures the sodium sulphate or phtassium sulphate formed, forms a crust and sticks to the glass apparatus.
Answer» Formation of a hard residual crust of the corresponding sulphate [Na₂SO₄ or K₂SO₄] which being a -poor conductor of heat, sticks to the glass and cannot be easily removed from the apparatus.

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