paper 12 chemistry ...

[angelicsuccubus]

wb different types of bonding one??? i go 4 iodine??

how does iodine have different type of bonding? I did the magnesium compound ..cause magneseium has metallic bonding and the compound itself was ionic.

 

[angelicsuccubus]

Most of the People were confused between B and D

I did B :/

yeh i went with 10.8 ... I mean if oxygen is being released as a gas... it's a diatomic molecule by defualt, you have to use 32.. oxygen atoms dont chill alone.. as 16 and 16.. so it shouldnt be 21.6

 

[msohiabch]

how does iodine have different type of bonding? I did the magnesium compound ..cause magneseium has metallic bonding and the compound itself was ionic.

it was asked I2 solid that means I2 molecule had covalent bonds between 2 I atoms like I-I and its has van der waals forces between molecules

 

[Farah1996]

anyone remember tht highest O.S of nitrogen...i go with N2O4 ...whch is C

yep mee too

 

[nikhil000]

I Believe it was A Bond energy also increases

thats not true ..bond length increases down the group ,so bond energy decreases....I guess the option was -Bond energy -increase
Bond polarity-decrease
Bond length -increase
...the answer should be C ,2 and 3 correct.

 

[angelicsuccubus]

it was asked I2 solid that means I2 molecule had covalent bonds between 2 I atoms like I-I and its has van der waals forces between molecules

great.. this sucks -_-

 

[nikhil000]

what was the answer of q.no 31 ,..which one of them have a planar shape ?..BF3,CH3+,,etc...

any one for Christ shake ,please do answer my question.

 

[Farah1996]

As n Se giv Acidic solution cuzz its below P n S....m i ryt????

yup

 

[msohiabch]

great.. this sucks -_-

these type of things happen ...
for the question which asked which is the greatest dipole i got that wrong second time i had done it in nov or june o9 paper that time was also wrong....

 

[Farah1996]

any one for Christ shake ,please do answer my question.

it was ch3+

 

[msohiabch]

any one for Christ shake ,please do answer my question.

its ans was A because all have trigonal planer shape...)

 

[msohiabch]

thats not true ..bond length increases down the group ,so bond energy decreases....I guess the option was -Bond energy -increase
Bond polarity-decrease
Bond length -increase
...the answer should be C ,2 and 3 correct.

its ans was A confirm as
i remember the option were that bond energy was with lesser
bond polarity was greater
bond length was greater

 

[msohiabch]

Guys I couldn't manage time properly please tell me that from Q. 25 to Q.29
what were the answers?

25 c
26 c
27 d
28 d
i am confused about 29 and 30 ..

 

[msohiabch]

it was ch3+

CH3+ also gives planer shape as there are only 3 bonding pairs not any other electrons...

 

[msohiabch]

Answer to the equilibrium question was D (2P <---> Q+2R)
Answer to largest overall dipole was B
Answer to ester hydrolysis was C 42.3% and 57.7%
Answer to coiine question was IMO B (unclear)


btw what was the answer to the 3 possible products When HBr reacts with the two cis-trans structures?

answer to coiine was D as nitrogen was bonded with 1st and 5th carbon oh the chain
and answer to 3 possible products was B
and with alkaline hydrolysis one alcohol is produced and other is the salt of metal present in alkali used which reacts with the carboxylic acid to form that salt...

 

[nikhil000]

its ans was A confirm as
i remember the option were that bond energy was with lesser
bond polarity was greater
bond length was greater

DAMn!!!! didn't read the question properly ..........(28-30 for A )...Not more than that .please .please.

 

[Bulltyro]

Alrite guys, I don't really remember much, but if somebody can just confirm this for me.
I had shit loads of D's from question 1-20....was this the case for the majority too?

 

[Prince III]

Alrite guys, I don't really remember much, but if somebody can just confirm this for me.
I had shit loads of D's from question 1-20....was this the case for the majority too?

Not really

 

[Prince III]

thats not true ..bond length increases down the group ,so bond energy decreases....I guess the option was -Bond energy -increase
Bond polarity-decrease
Bond length -increase
...the answer should be C ,2 and 3 correct.

I don't remember the Question properly but the answer was A for sure dude

 

[msohiabch]

Alrite guys, I don't really remember much, but if somebody can just confirm this for me.
I had shit loads of D's from question 1-20....was this the case for the majority too?

nah man there were only 5 6 D's in first 20 questions
like for 7th 8th 16th 12th. these are confirm others i am confused..