Question

The total no of ions present in 111 g of $CaC{l}_2$ is

• A. One mole
• B. Two mole
• C. Three mole
• D. Four mole

Answer 1

The correct option is C Three mole

$CaC{l}_2$ has a molar mass of $111g/mol$. This, on dissociation gives one $C{a}^{2+}$ and two $C{l}^{-1}$ ions. It gives total 3 ions. Therefore it gives 3 moles of ions.