Question

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

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

Answer 1

The correct option is C $2:1$

To find: Ratio of equivalent weight of carbon in CO and $C{O}_2$.

Solution: We know that, equivalent weight$=\frac{Molarweight}{valency}$

Let valency of C be x in CO and charge on O atom is 0

$\Rightarrow x+(-2)=0$

$\Rightarrow x=2$

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$=6:3=2:1$

Hence (c) is the required answer.