M The illustration to the left represents a mixture of nitro

M. The illustration to the left represents a mixture of nitrogen ( blue ) and oxygen ( red) molecules. If the molecules in the above illustration react to form NO2 according to the equation N2 +2 02-2N02 , the limiting reagent is the number of NO2 molecules formed is , and req the number of molecules in excess is Retry Entire Group 4 more group attempts remaining Next

Solution

3 molecules of nitrogen are present in the picture.

So 3 molecules of nitrogen will need 6 molecules of O2 .

Since there are only 4 molecules of O2 left , so O2 is the limiting reagent.

4 molecules of O2 are present , so number of NO2 molecules formed will be 4.

4 molecules of O2 will utilise 2 molecules of N2

So the number of N2 molecules in excess is 1.