Question

what volume of o2 at stp is required for complete combustion of 200cm3 of acetylene and what would be volume of the co2 formed ?

Answer 1

Hi friend,


Combustion reaction of acetylene:
C2H2 + 52O2 → 2CO2 + H2O

According to reaction,
At STP;
1 mole of acetylene that is 22.4L require 5/2 moles of oxygen that is 52×22.4 = 56L for complete combustion.

Now, 200cm3 or 0.2L of acetylene will require = 5622.4×0.2 = 0.5L or 500cm3 of oxygen for complete combustion

1 moles of acetylene that is 22.4L produce 2 moles that is 2×22.4 = 44.8L of carbon dioxide.

Now, 0.2L of acetylene will produce = 44.822.4×0.2 = 0.4L or 400cm3 of carbon dioxide.


Hope this helps you...

Please mark it as brainliest answer....☺☺☺

Answer 2

Combustion reaction of acetylene:
C₂H₂+$\frac{5}{2}$ O₂→2CO₂+H₂O

According to reaction,
At STP;
1 mole of acetylene that is 22.4L require $\frac{5}{2}$ moles of oxygen that is $\frac{5}{2}$×22.4=56L for complete combustion.

Now,200cm³ or 0.2L of acetylene will require=
$\frac{56}{22.4}$×0.2=0.5L or 500cm³ of oxygen for complete combustion
1 moles of acetylene that is 22.4L produce 2 moles that is 2×22.4=44.8L of carbon dioxide.
Now,0.2L of acetylene will produce = $\frac{44.8}{22.4}$×0.2=0.4L or 400cm³of carbon dioxide