s-Block ElementsHard
Question
Which of the following can not decompose on heating to give CO2?
Options
A.Li2CO3
B.Na2CO3
C.KHCO3
D.BaCO3
Solution
Alkali metal carbonates except Li2CO3 are stable towards heat because they are most basic in nature and basic character increases down the group and thermal stability increases down the group.
Bigger HCO3- anion is polarised by smaller Li+ and thus readily decomposes to give CO2 gas.
Li2CO3
Li2O + CO2
Bigger HCO3- anion is polarised by smaller Li+ and thus readily decomposes to give CO2 gas.
Li2CO3
Li2O + CO2 Create a free account to view solution
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