Identify the correct statements from the following. (A) $\mathrm{BeSO}_4$ is soluble in water. (B)…
Identify the correct statements from the following.
(A) $\mathrm{BeSO}_4$ is soluble in water.
(B) $\mathrm{BeO}$ is an amphoteric oxide.
(C) $\mathrm{CO}$ can be obtained by heating $\mathrm{CaCO}_3$ at 1070-1270 K.
$A, B, C$
$A$ and $B$
$A$ and $C$
$B$ and $C$
Solution
(A) $\mathrm{BeSO}_4$ is soluble in water due to higher hydration energy of $\mathrm{Be}^{2+}$. It overcomes the lattice energy fâctors making $\mathrm{BeSO}_4$ soluble in water. The statement is correct.
(B) $\mathrm{BeO}$ is amphoteric oxide as it can react with both acid and base, thus acting as basic and acidic respectively. The given statement is thus correct.
(C) CO can be obtained by heating $\mathrm{CaCO}_3$ at $1070-1270 \mathrm{~K}$ is a incorrect statement.
$\mathrm{CaCO}_3 \stackrel{\Delta}{\longrightarrow} \mathrm{CaC}+\mathrm{CO}_2 \uparrow$
$\therefore$ The correct statements are only A and B.