Question

What is the active mass of one litres of Nitrogen gas at NTP?

• A. $0.022$
• B. $0.066$
• C. $0.44$
• D. $0.044$

Answer 1

The correct option is D $0.044$

Active mass : It is defined as the number of moles present in one liter. Or we can say that the concentration of a reacting substance expressed in moles per liter.

As we know that,

At $NTP$, the $1$ mole of gas contains $22.4$ liter volume of gas

As, $22.4L$ volume of nitrogen gas present in $1$ mole of nitrogen gas

So, $1L$ volume of nitrogen gas present in $\frac{1}{22.4}=0.044$ mole of nitrogen gas

Therefore, the active mass of one liter of nitrogen at $NTP$ is, $0.044mol/L$

Option D is correct.