fat Why Li2CO3 decomposed at a lower temperature, where as Na2CO3 at h

1.	fat Why Li2CO3 decomposed at a lower temperature, where as Na2CO3 at higher temperature?Draw the structure of BeCl, (vapour)
Answer» 1.As we move down the alkali metal group, the electropositive character increases. This causes an increase in the stability of alkali carbonates. However, lithium carbonate is not so stable to heat. This is because lithium carbonate is covalent. Lithium ion, being very small in size, polarizes a large carbonate ion, leading to the formation of more stable lithium oxide. ∆Li2CO3--------->LiO2+ CO2 Therefore, lithium carbonate decomposes at a low temperature while a stable sodium carbonate decomposes at a high temperature. 2.

fat Why Li2CO3 decomposed at a lower temperature, where as Na2CO3 at higher temperature?Draw the structure of BeCl, (vapour)

Answer»

1.As we move down the alkali metal group, the electropositive character increases. This causes an increase in the stability of alkali carbonates. However, lithium carbonate is not so stable to heat. This is because lithium carbonate is covalent. Lithium ion, being very small in size, polarizes a large carbonate ion, leading to the formation of more stable lithium oxide.

∆Li2CO3--------->LiO2+ CO2

Therefore, lithium carbonate decomposes at a low temperature while a stable sodium carbonate decomposes at a high temperature.

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