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Chemistry 8 Online
OpenStudy (anonymous):

"5 dm^3 of SO2 reacts with 5dm^3 of Oxygen (02). What is the volume of the product, SO3?" Please help!!!! test after tomorrow...

OpenStudy (aaronq):

you have to write an equation and balance it

OpenStudy (aaronq):

then if you're given mass you have to convert it to moles... but in cases like these, where you assume gas ideality, 1 mole = 22.414 L so the number of moles is proportional to the volume of gas.

OpenStudy (anonymous):

but they're not gases

OpenStudy (aaronq):

they are gases

OpenStudy (anonymous):

Only 02 is a gas

OpenStudy (anonymous):

so2 and so3 are solids

OpenStudy (aaronq):

nope, they would give you a mass if they were solids. if they were liquids, they would give you a concentration along with the volume

OpenStudy (aaronq):

5 dm^3 of a solid is a huge amount

OpenStudy (anonymous):

oh

OpenStudy (anonymous):

so this is what i did so far, tell me if I'm doing it right or not:

OpenStudy (anonymous):

I have 2So2 + O2 ---> 2SO3

OpenStudy (anonymous):

and then we have to find limiting reagent?

OpenStudy (anonymous):

SO_2 is limiting reactant

OpenStudy (aaronq):

yep, so far so good

OpenStudy (anonymous):

So the SO2 would give us 0.22 moles of SO3

OpenStudy (anonymous):

V = 22.4 * 0.22

OpenStudy (anonymous):

which equals 4.9

OpenStudy (anonymous):

let me check in the answers if this is right did i do it right?

OpenStudy (aaronq):

you forgot to use the stoichiometric coefficients

OpenStudy (anonymous):

I didn't need to multiply it though

OpenStudy (anonymous):

because its 2SO_2 + O2 ---> 2SO3

OpenStudy (anonymous):

2 * 1 = 2

OpenStudy (aaronq):

oh sorry you're right

OpenStudy (anonymous):

ok i checked the answers it says 5 which is basically 4.9 rounded thanks a lot for helping me

OpenStudy (aaronq):

no prob ! sorry about the confusion I'm doing too many things at once

OpenStudy (anonymous):

no problem

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