why does ch3coch3 has stronger intermolecular forces than c2h5oc2h5? even though both have dipole-dipole as their IMF, but c2h5o
c2h5 has a larger molecular weight and as the molecular weight increases, the IMF get stronger. so why it is the opposite here?
1 answer:
I think because the CH3COCH3(second picture) has a ketone(the double bond to oxygen C=O) in the chemical structure and I believe ketones lead to stronger IMF than ethers(C-O-C). I am not sure about this, but I hope this answer will at least help give you a hint as to what to look up to figure this out. I'm sorry I couldn't be of more help!
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Answer:
19.07 g mol^-1
Explanation:
The computation of the molecular mass of the unknown gas is shown below:
As we know that
where,
Diffusion rate of unknown gas = 155 mL/s
CO_2 diffusion rate = 102 mL/s
CO_2 molar mass = 44 g mol^-1
Unknown gas molercualr mass = M_unknown
Now placing these values to the above formula
After solving this, the molecular mass of the unknown gas is
= 19.07 g mol^-1
The numbers may be off by a few, if you worked it out, since my periodic table is for AP chemistry. Hope this helps!!!
