Explain why you might expect the behavior of carbon dioxide to be less ideal than that of hydrogen?

Question

jkasdhk · Answer

@shubhamsrg

shubhamsrg · Answer

Which one has stronger inter molecular forces ?

jkasdhk · Answer

Hydrogen

jkasdhk · Answer

?

shubhamsrg · Answer

Eh ? why ?

jkasdhk · Answer

oh yes carbon dioxide.. i was about to write it..

shubhamsrg · Answer

Why carbon dioxide then ?

jkasdhk · Answer

can u tell me...

shubhamsrg · Answer

Yes I can, but you don't know why CO2 has stronger intermolecular forces? just guessed it hmm ?

jkasdhk · Answer

because.... it has lone pair of electrons ?

shubhamsrg · Answer

o.O

NOPES!

CO2 has larger size! Hence a greater Van der Wall's force of attraction. Thus CO2 has greater intermolecular forces.

jkasdhk · Answer

OK OK

shubhamsrg · Answer

Now, reason you need to know that is :

One of the many assumptions of an ideal gas is that Intermolecular forces of an ideal gas are negligible (or 0)

More the intermolecular forces, lesser the ideality of the gas, or more the deviation from ideal behavior.

So , you got your answer ?

jkasdhk · Answer

OH YES! I got it!

jkasdhk · Answer

:) Can i ask you 3 to 4 more questions i need to know for my assignment ?

shubhamsrg · Answer

But I gotta go soon. 
You should study harder for the homework, comeon, consult some good books. Best of luck. :)

jkasdhk · Answer

Its alright if u r going.. i'll submit my assignment on 20th of january

jkasdhk · Answer

Tell me the ans: Under what conditions of temperature and pressure would you expect the behavior of CO2 to be most like an ideal gas?

shubhamsrg · Answer

For a gas to behave ideally, Intermolecular forces must be minimum.
What can you make out of this ?

jkasdhk · Answer

to decrease the pressure and inc the temp  ? to make it ideal

shubhamsrg · Answer

Are you just guessing it ?

jkasdhk · Answer

no i m telling u the answer..

shubhamsrg · Answer

What logic you apply ?

jkasdhk · Answer

At low pressure and high temp, intermolecular forces do not attract which makes the gas ideal

jkasdhk · Answer

?

shubhamsrg · Answer

Just beating around the bush aren;t you ? :D

jkasdhk · Answer

i m right... i think

shubhamsrg · Answer

Anyways, that answer is correct
At high temperature, rms velocity (or average velocity) of gases inc, which enables them to move with higher speed much more freely, which is accompanied by low pressure.

jkasdhk · Answer

But if we relate it to kinetic molecular theory then my answer will be correct.. No?

shubhamsrg · Answer

That is what i just said, I related to KTOG only
yes that is correct.

shubhamsrg · Answer

BYE -BYE! :P