[edsmart]

Consider the following reaction:

CH4(g) + 2O2(g)
⟶
 CO2(g) + 2H2O(l)

What is the final volume if 10 L of methane (CH4) reacts completely with 20 L of oxygen?

So for this question, I got 30 liters, but the question said it was 10 liters. Why is liquid not counted? When is liquid counted? How about solid? Does this only apply to volume?

[sjb]

What is the volume of one mole of water at STP, and of one mole of carbon dioxide, also at STP?

[edsmart]

22.4 L for water and 22.4 L for carbon dioxide, they are the same?

[sjb]

Not quite, what is the definition of STP?

[edsmart]

standard temperature and pressure, so 1atm and 273.15 K. I am not sure where to go

[chenbeier]

And in which form is water  and Carbondioxide at STP

[edsmart]

liquid and gas? I did the mass density for water to find the volume, i got like 18 ml.

[chenbeier]

The volume what is counted for gas reaction is only the one of gaseous compounds. Liquid and solid substaces  are not counted.

[edsmart]

Thank you, is it because gas is only applicable to ideal gas law?

[Borek]

Thank you, is it because gas is only applicable to ideal gas law?

No idea what you mean, but you can apply ideal gas law only to gases, not to liquids nor solids.

[edsmart]

ok thanks