Question

if you burn 6g of carbon in limited air, the reaction is different: 2C +O2 = 2CO, what volume of oxygen will be used up this time ?​

Answer 1

1 mole of any gas occupies 22.4 l at STP.

Therefore, 1 mole of O

2

occupies 22.4 l at STP.

Thus the assertion is correct.

The volume of gas depends upon temperature, pressure, no. of moles present but not on the nature of the gas.

Thus the reason is incorrect.