Chemistry, asked by Anonymous, 1 year ago

How many moles of methane are required to produce 22nd CO2 after combustion?

CBSE 2017 class 11th (2 marks)

Expecting good answer !


kvnmurty: 22 gms or kgs or moles of CO2 ?

Answers

Answered by kumkum19
8
answer is 0.5 mol.
1) formula for the complete combustion of methane with oxygen: CH4+2O2 =CO2+2H2O
2) molecular mass ofCO2=12+2(16) =44g
3) combining 1 and 2, 1 mol CH4=44g(1mol) CO2.
4)by proportion 0.5 mol CH4 in complete combustion=22g CO2.
hope this helps u

Anonymous: Thanks .
Answered by kvnmurty
15
Burning of Methane:   
 
   CH4 (g) + 2 O2 (g)  ===>  CO2 (g)     + 2 H2 O (l) or (g)
  
   1 mole      2 moles        1 mole = 44gm       2moles=36 gms

Molar mass of CO2 = 44.   
So 1 mole of CH4 produces 1mole of CO2 or 44 gm of CO2.

Given that CO2 produced is 22 gm ?
So amount of CH4 needed,  22/44 = 1/2 mole of CH4 gas.


kvnmurty: :-)
duragpalsingh: Thnx sir
Anonymous: Thank you sir
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