AS Chemistry P2 Prep.

[saudha]

wat r the condition for the Hyber process...coz iam gething 2 different conditon from 2 different book...dont know which 1 is correct...

temp-450 C
pressure-200 atm
catalyst- finely divided iron

 

[angelgirl:)]

temp-450 C
pressure-200 atm
catalyst- finely divided iron

here i dont no from where i got ...its like 2500KPa ...670-770 K temp...and den Fe catalyst

 

[saudha]

here i dont no from where i got ...its like 2500KPa ...670-770 K temp...and den Fe catalyst

forget tht just remember
200 atn
and 450C

 

[angelgirl:)]

forget tht just remember
200 atn
and 450C

ok....

 

[saudha]

ok....

wht is spin pair repulsion?

 

[angelgirl:)]

wht is spin pair repulsion?

e- in the same orbital rotate in opposite direction...reducing the repulsive force..i guess

 

[saudha]

e- in the same orbital rotate in opposite direction...reducing the repulsive force..i guess

okk

 

[angelgirl:)]

ok saudha have to go and study with full conc...den i will come after sometimes to discuss my doubts...

 

[user]

because that peak represents the reaction after the formation of the intermediate.

is it always that the reaction of the intermediate has lower activation energy?

 

[littlecloud11]

is it always that the reaction of the intermediate has lower activation energy?

yes. otherwise the reaction won't reach completion and the intermediates won't be converted into products.

 

[alim]

wats the bond angle and shape of a compound with 2 bond pairs and 1 lone pair

 

[angelgirl:)]

wats the bond angle and shape of a compound with 2 bond pairs and 1 lone pair

120...same as BF3 i guess...

 

[alim]

but bf3 has 3 bond pairs....

 

[Saad (سعد)]

wats the bond angle and shape of a compound with 2 bond pairs and 1 lone pair

Angular/Bent, 117 degrees. An example is SO2.

 

[angelgirl:)]

Its not possible I guess.......... check this out
http://en.wikipedia.org/wiki/VSEPR_theory

it is possible look at the column of 1 lone pair...the first molecule...bend shape...with 1 lone pair and 2 bond pairs

 

[Muhammad Ahmer Ali]

it is possible look at the column of 1 lone pair...the first molecule...bend shape...with 1 line pair and 2 bond pair

Yeah I just looked at it, its bent around 104.5

 

[Muhammad Ahmer Ali]

wats the bond angle and shape of a compound with 2 bond pairs and 1 lone pair

See the Stearic No 3, and lone pair 1 column in the wikipidia link, where E is the no of lone pairs, and X is bond pairs
http://en.wikipedia.org/wiki/VSEPR_theory

 

[Saad (سعد)]

Now, someone, please kindly, riddle me this.

Question 4, (f), (iii):

Paper: Click Me
Mark Scheme: No, Me!!!

... Why on planet Earth do those carbon atoms (in the mark scheme answer) have five bonds each?

 

[angelgirl:)]

See the Stearic No 3, and lone pair 1 column in the wikipidia link, where E is the no of lone pairs, and X is bond pairs
http://en.wikipedia.org/wiki/VSEPR_theory

so the bond angle will be 120 or 117? it cant be 104.5

 

[angelgirl:)]

so the angle is 105....?

fromwhere this angle came?lol no ...according to me its either 120 or 117 but not sure which1?