Question

What is the active mass of one litre of nitrogen at NTP

Answer 1

Normally 22.4 l Nitrogen weighs 28 g at NTP
1 l Nitrogen weighs = 1.25 g at NTP

Answer 2

Answer : The active mass of one liter of nitrogen at NTP is, 0.044 mole/L

Solution :

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

So, 1 L 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, 0.044 mole/L