Question

The equivalent weight of divalent metal is $W$. The molecular weight of its chloride is:

• A. $W+35.5$
• B. $W+71$
• C. $2W+71$
• D. $2W+35.5$

Answer 1

The correct option is C $2W+71$

Equivalent weight = $\frac{Molecularweight}{Valency}$

The equivalent weight of divalent metal is W

The molecular weight of the metal will be twice its equivalent weight as the metal is divalent.

Thus, the molecular weight of the metal will be 2W

Since, the metal is divalent, its chloride will have formula $MC{l}_2$

Molecular weight of chlorine is 71g/mol

The molecular weight of its chloride is 2W + 71