Question

The carbonate that will not decompose on heating is

• A. $N{{a}_{2}}C{{O}_{3}}$
• B. $CaC{{O}_{3}}$
• C. $BaC{{O}_{3}}$
• D. $SrC{{O}_{3}}$

Answer 1

Answer: (A)

$N{{a}_{2}}C{{O}_{3}}$

Answer 2

$N{{a}_{2}}C{{O}_{3}}$ will not decompose on heating. All alkali metal (IA group) carbonates (except $L{{i}_{2}}C{{O}_{3}}$ ) are highly stable and not decomposes on heating. Carbonates of alkaline earth metal (II A group) decompose into $C{{O}_{2}}$ and metal oxide.