Question: If 16g of ch4 is burnt then find the mass of CO2 produced. The answer comes out to be 44g but according to gay lussac's law since both of them have 1 mole so their their mass should be same so how come it's different?

Posted by: Abc on 28.06.2022

See the balanced equation

1 mole CH4 combined with 2mole atmospheri oxygen get 1mole of CO2 and 2mole of water. Basically mass gain due to combination of atmospheric oxygen
Different substances have different mass in one mole. For CH4 one mole is equal to 16g. For CO2 one mole is equal to 44g Molecular weight measure in gram will be one mole CH4+2O2 > CO2+2H2O From this reaction we can understand that one mole of CH4 giving one mole of CO2.

CH4 + 2O2 = CO2 + 2H2O

One mole of CH4 reacts with two moles of oxygen to produce one mole of CO2 and two moles of water.

16 g CH4 means (16/16) mole or 1 mole CH4.

Thus one mole CH4 will produce one mole or (12 + 32) or 44 g CO2.

Equal moles doesnot mean equal mass

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