STD 12 - 7. Alcohol, phenol and ethers — NEET STD 11 Science — Question

$A + 2B \rightleftharpoons  2C + D$

$A.$ $Sm ^{2+}$    $B.$ $Ce ^{2+}$   $C.$ $Ce ^{4+}$    $D.$ $Tb ^{4+}$

Choose the most appropriate answer from the options given below :

then the solubility of $AB _{2}$ in pure water is......... $\times 10^{-4}$ $mol$ $L ^{-1}$.

[Assuming that neither kind of ion reacts with water]