First slide

Qualitative analysis

Question

Which of the following carbonates do not give metal oxide on heating?

Moderate

A

${CuCO}_{3}$
B

$K_{2} {CO}_{3}$
C

${Na}_{2} {CO}_{3}$
D

${MgCO}_{3}$

Solution

Potassium carbonate on heating forms a liquid, but do not decompose. Beyond 1200⁰C it can.

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