1. Is sodium carbonate stable towards heat? 2. Is lithium carbonate sable towards heat? 3.Name 2 metals which do not react with water. 4.Name a gas acting as both an oxidising and reducing agent. 5. Name an oxidising agent which does not contain oxygen. 6. Name two metallic oxides decomposes on heating.
Answers
Answered by
0
Answer:
THIS IS THE ANSWER PLS MARK ME AS BRAINLIST
Explanation:
Alkali Carbonates are stable to heat except that Li
2
CO
3
is unstable. Thermal stability increases moving down the group.
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.
Therefore, lithium carbonate decomposes at a low temperature while a stable sodium carbonate decomposes at a high temperature.
Li
2
CO
3
on heating gives Li
2
O + CO
2
.
Similar questions