Question

6g of carbon is burnt in presence of 8g of oxygen to form co2 .what is the mass of co2 ?

Answer 1

Here O2 is the limiting reagent.In presence of 8g O2 ie 1/4 mol O2 only 1/4 mol ( 3g) C react to produce 1/4 mol CO2.

Therefore in this process only 1/4 mol CO2 is formed =44/4 = 11g.

C + O2 -------> CO2.