Question

Equivalent weight of carbon in $CO$ and $C{O}_2$ are in the ratio of:

• A. $1:1$
• B. $1:2$
• C. $2:1$
• D. $1:4$

Answer 1

Answer: (C)

To find: Ratio of equivalent weight of carbon in $CO$ and $C{O}_2$.
Solution: We know that, equivalent weight
$=\frac{\text{ Molar weight }}{\text{ valency }}$
Let valency of $C$ be $x$ in $CO$ and charge on $O$ atom is $O$
$\Rightarrow x+(-2)=0$
$\Rightarrow x=2$
Hence, valency of $C$ in $CO$ is $2$.
Similarly, the valency of $C{O}_2$ is $4$.
Now, equivalent weight of $C$ in $CO=\frac{12}{2}=6$
(since molar weight of carbon atom is $12g$)
And equivalent wt of $C$ in $C{O}_2=\frac{12}{4}=3$
Hence, the required ratio $=6:3=2:1$