Question

On heating which of the following release `CO_(2)` most easily ?
A. `Na_(2)CO_(3)`
B. `MgCO_(3)`
C. `CaCO_(3)`
D. `K_(2)CO_(3)`

Answer 1

Correct Answer - B
Alkali metal carbonates (except `Li_(2)CO_(3)`) are more stable than alkaline metal carbonates . Among alkaline earth metal carbonates , thermal stability increases down the group . Thus , `MgCO_(3)` decomposes most easily .