Question

Ethene burns in oxygen according to the equation:
C2H4 + 3O2----> 2CO2 + 2H2O
What volume of ethene measured at r.t.p would burn completely in 10.8 dm^3 of oxygen? Thanks!

Answer 1

hmm...does the question tell us if ethene and the products are gases? if ethene is not a gas, then we would need the density to find its volume.

Answer 2

Actually all that is written is what was provided.

Answer 3

well, i am supposed to look it up, but since ethene is a vapor from ripening fruit, let's assume that it's a gas. in that case, i would look up what "avogadro's law" says. what's true about the volumes of ideal gases when they are at the same pressure and temperature (r.t.p. in this case)?

based on avogadro's law and the number ratio in which O2 and C2H4 must react, we can determine the volume.

Answer 4

And how do you do that? i don't understand :(

Answer 5

do you have a book or the net with you? i would look up "avogadro's law" and how we can use volume ratio to determine number ratio. it's one of the coolest things about gen-chem; don't let me ruin it for you.

Answer 6

oh ok thanks!