Question

$1g$ of titanium (at.wt. $48$) reacts with ${Cl}_2$ to give $3.21875g$ compound. The valency of titanium is ________ .

Answer 1

System can be written as:

$Ti+\frac{y}{2}C{l}_2\to TiC{l}_y$

Since valence of $Cl$ is $-1$

From above reaction $48gTi$ gives $(44+35.5y)g$ of product

Therefore $1gTi$ will give $\frac{48+35.5y}{48}g$ product

Given that: $\frac{48+35.5y}{48}=3.21875$

$\therefore y=3$

The valence of $Ti$ in the product is $+3$.