paper 12 chemistry ...

[BILALrox01]

@bilal nup..its sumwht 27....for 30th i go wid ethyl ethanoate

btw y ethyl ethanoate?

 

[Ali23]

Sn2 reaction one ans plzzz

 

[oldfashionedgirl]

i did it wrong but i think it was A

nope, in 3 it was written that ammonia behaves as a laury-bronsted base which means that it'll gain an H+ proton, but ammonia does NOT. It remains as NH3

 

[Ali23]

@bilal cuz it was wriitten it acnt react with PCl3...so no alchol i.e ethanol...its ethyl ethanoate

 

[BILALrox01]

Sn2 reaction one ans plzzz

C i think. the one with the bracket nd - sign on bromine and OH

 

[BILALrox01]

nope, in 3 it was written that ammonia behaves as a laury-bronsted base which means that it'll gain an H+ proton, but ammonia does NOT. It remains as NH3

hmmm ok.

 

[BILALrox01]

@bilal cuz it was wriitten it acnt react with PCl3...so no alchol i.e ethanol...its ethyl ethanoate

ok. dont remember the qstn actually

 

[Ali23]

@oldfashion yepp ryt...i go wid D in dat questn

 

[Ali23]

@bilal yearyt... for Sn2 it was C...

 

[oldfashionedgirl]

@oldfashion yepp ryt...i go wid D in dat questn

actually i went ahead with B, because in option 2 it was written that the oxidation state of nitrogen does not change which will be true ofcourse since at the beginning of the reaction and at the end, ammonia stays ammonia!

 

[oldfashionedgirl]

Sn2 reaction one ans plzzz

its C

 

[Natashakhan]

any other qs? :S
i dont remember any

 

[oldfashionedgirl]

any other qs? :S
i dont remember any

what was the answer of the largest overall dipole? i went with A

 

[Natashakhan]

it was B

 

[lavanyamane]

My paper was great! Definitely an A

 

[lavanyamane]

what was the answer of the largest overall dipole? i went with A

It was B

 

[Ali23]

@Oldfashion..it was B abt dat dipole..

 

[lavanyamane]

P = ?
V = 7000 cm^3
Number of moles of gas = 0.03
temperature = 30 degree

Remember we have to convert cm^3 into dm^3 and temperature into K

Option C was correct

Actually, in pV=nRT, volume is supposed to be in m^3, not dm^3. And you're right about the temperature.

 

[Ali23]

whn mg ribbon reacts with cold water...i go with B...bubbles of gas appears on mg ribbon....m i ryt???

 

[lavanyamane]

Ash the percentage of mass one is 50% 50%...both

No, the percentage by mass was C i think.. definitely not 50-50