Chemistry: Post your doubts here!

[Thought blocker]

yea but why?

Show me ua workinng..

 

[♣♠ Magnanimous ♣♠]

there is nothing like working here.! just we have to see the diff groups present nothing else

Show me ua workinng..

 

[Jelleh Belleh]

there is nothing like working here.! just we have to see the diff groups present nothing else

 

[♣♠ Magnanimous ♣♠]

View attachment 43841

thanks

 

[♣♠ Magnanimous ♣♠]

here why not A and why the answer is D ..
the reaction of ALCOHOL GIVES HYDROGEN SO IT SHOULD BE A isn't it?

 

[kitkat <3 :P]

View attachment 43843here why not A and why the answer is D ..
the reaction of ALCOHOL GIVES HYDROGEN SO IT SHOULD BE A isn't it?

only acid reacts with sodium to give hydrogen isnt it?

 

[♣♠ Magnanimous ♣♠]

only acid reacts with sodium to give hydrogen isnt it?

but new edition the orange book.. chapter 16 page 240.. here i can see that alcohol reacts with sodium to give HYDROGEN! and that one mole ..
so how D

 

[♣♠ Magnanimous ♣♠]

1 mol of either -COOH or -OH gives .5mols of hydrogen
therefore there should be either 2 OH groups or 2 COOH groups or one from each
as a result we end up with D!

but if we take reac A than too we can get one mole isn't it!

 

[♣♠ Magnanimous ♣♠]

THAT'S A PRINTING MISTAKE!!!!!!1
TRY BALANCING THAT REACTION

Yeah!! I was wondering that only

 

[♣♠ Magnanimous ♣♠]

what is this --> CH3CH(OH)CH3
an alcohol or anything else?

 

[mehria]

what is this --> CH3CH(OH)CH3
an alcohol or anything else?

it is an alcohol

 

[♣♠ Magnanimous ♣♠]

it is an alcohol

ok

 

[Metanoia]

View attachment 43831

Ans is A.
Based on bond energy C-Cl would be broken.

C-F and C-H bond would not be broken.

 

[♣♠ Magnanimous ♣♠]

Ans is A.
Based on bond energy C-Cl would be broken.

C-F and C-H bond would not be broken.

sorry!! answer is wrong

 

[IGCSE13]

http://papers.xtremepapers.com/CIE/...d AS Level/Chemistry (9701)/9701_w07_qp_1.pdf. Q 9 , 32 and 37 please

 

[Metanoia]

View attachment 43797My answer is C but the answer is D so anyone explain please!

* Feeling Lazy *
Look it Is Slow Meaning it has Higher Activation Meaning It will Have Longer Hump or Whtever is that thingy..! The other One has A fast Reaction Meaning Lower Activation Energy ( that Curved Part Below The First One) So D!

I'm sorry, but the explanation is not correct.

If we look carefully, the activation energy of the 1st step is more than the activation energy of the 2nd step for both options C and D.

The correct approach is to realise there are two humps (2 step reaction), so either C or D.
Then we need to recognise it forms a more stable product, i.e exothermic, so answer is D.

 

[Metanoia]

sorry!! answer is wrong

Oh, I'm surprised. What is the supplied answer?

 

[♣♠ Magnanimous ♣♠]

Oh, I'm surprised. What is the supplied answer?

it is C

 

[♣♠ Magnanimous ♣♠]

D should be the correct answer!

The answer is C

 

[Metanoia]

it is C

Oh, thats right, i apologised.

Option A is actually C-F bond broken.
For option C, it is the C-Cl bond broken.

So its is option C, but using the explanation I mentioned in post #9124