A compound possesses 8% sulphur by mass.The least molecular mass is

Question

$\begin{array}{1 1}(a)\;200&(b)\;400\\(c)\;155& (d)\;355\end{array} $

Comments

nice answer. thanks

Answer 1

The compound has sulphur=8%

$\therefore$ 8g of S is present in 100g

$\therefore$ 32g of S is present in $\large\frac{100}{8}$$\times 32=400g$

[Least molecular mass means that at least one atom of sulphur should be present in molecule]

Hence (b) is the correct answer.