couple questions from kaplan

[gomawum]

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I saw this question on the previous post, but since I can't find it, I'll ask again

one of kaplan question predicted that product of benzyl alcohol with KMnO4 react with NH3 will make amide.

but I don't think carboxylic acid can react with amine..
can it?

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View attachment aa.bmp
same from kaplan question
they said if alkyne is attacked to the ring, it will act as EW and make it acidic.
(i though alkyne is ED which is -R... but okay i'll just take it as it is)

but what about the 2nd compound?
is it EW or ED?

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the condition for real gas are at low temp, and high pressure and
the condition for ideal gas are at high temp, and low pressure...

but what does it mean by Pressure of real gas < pressure of ideal gas and
volume of ideal gas <volume of real gas?

it seems counterintuitive......



and can someone explain me why this is c?

For any given substance at a pressure of 50 atm and
temperature of 30 K, which of the following statements
is most likely accurate?

A. The equation PV = nRT is obeyed exactly.
B. The volume of the substance is slightly greater than
that predicted by PV = nRT
C. The volume of the substance is much less than that
predicted by PV = nRT.
D. The van der Waals equation of state is obeyed exactly.
E. One mole will not contain Avogadro's number of
particles.

since this is condition for real gas, I assume volune of real gas is greater than predicted by ideal gas.
but why is it c?

I'm lost

 

[nwdmd]

"teach a man to fish..."

carboyxylic acids amides question:

google: carboxylic acids amides

http://library.thinkquest.org/3659/orgchem/carboxylicacids.html

deviations from ideal gas question:

google: deviations from ideal gas

http://library.thinkquest.org/C006669/data/Chem/gases/vanderwaals.html

*this isn't meant to be rude

 

[gomawum]

so you are saying amide CAN form from carboyxlic acid when using NH3 and CANNOT with primary,2ndary, or tertiary?

'cause I've read that amide would not form from carboyxilic acid would and that's why we convert acid to cabonyl halide first.

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okay i get the real gas behavior but what about the question?
the answer said the condition does not apply to ideal gas nor real gas..

but since it has high pressure and low temp, why the real gas property isn't applied?
?.?

 

[klutzy1987]

the reactivity order goes i believe:
carboxy acids>acyl halides>esters>anhydrides>amide

From a more reactive molecule you can make anyone of the less reactive molecules. Going reverse is not so easy though.