When 1 volume of gas X reacts with exactly 5 volumes of oxygen it forms carbon dioxide and
water only.
What is gas X?
A methane, CH4
B ethane, C2H6
C propane, C3H8
D butane, C4H10

Question

When 1 volume of gas X reacts with exactly 5 volumes of oxygen it forms carbon dioxide and
water only.
What is gas X?
A methane, CH4
B ethane, C2H6
C propane, C3H8
D butane, C4H10

anonymous · Answer

Please show me an easy way to do this!

anonymous · Answer

it is C propane

to find the number of moles of Oxygen there is a general formula

CxHy  

X+Y/2 = Number of Oxygen required

anonymous · Answer

I didn't get that formula. @hashsam1

anonymous · Answer

you know co2 and h20 are formed when any hydrocarbon undergoes Combustion

so if want to burn any hydrocarbon

CxHy +O2= CO2 + H20

TO BALANCE IT

O2= X+Y/4 

CO2=X

H20=Y/2

anonymous · Answer

Oh. Ok. Thank you so much! :)

anonymous · Answer

Np