Chemistry : P1 and P2 doubts only (Only AS allowed)

[A star]

guys can anyone write here the full equation of reaction od H2SO4 with hydrogen bromidee and iodide

 

[MustafaMotani]

I wrote P ( y ) and it showed P ..
uff

 

[A star]

Kp = P(P(z))^2/P(x)

Pressure of any gas can be found by : moles of that gas/total moles x total pressure

total mole of that gas or total mole of gases in the mixture :/

 

[MustafaMotani]

guys can anyone write here the full equation of reaction od H2SO4 with hydrogen bromidee and iodide

H2SO4 + HBr ---> Br2 + SO2 + H2O
same with Iodide just write I instead of Br

 

[iKhaled]

guys can anyone write here the full equation of reaction od H2SO4 with hydrogen bromidee and iodide

H2SO4 + HBr ----> Br2 + H20 + SO2

H2SO4 + HI ----> I2 + H2S + H2O

these aren't balanced though. too lazy to balance them

 

[MustafaMotani]

total mole of that gas or total mole of gases in the mixture :/

Suppose u have to find pressure of gas x in the mixture of x, y and z

So : Moles of x/moles of x,y and z x Total pressure

 

[A star]

you sure it shows a loooooooooooooooooooooooooooooooooooooooooong equation in chem guide

 

[syed1995]

H2SO4 + HBr ---> Br2 + SO2 + H2O
same with Iodide just write I instead of Br

can ya solve that question?

 

[A star]

Suppose u have to find pressure of gas x in the mixture of x, y and z

So : Moles of x/moles of x,y and z x Total pressure

ok thankyou u r a lifesaver i forgo that :O

 

[iKhaled]

total mole of that gas or total mole of gases in the mixture :/

mole of that gas DIVIDED by total moles TIMES total pressure..if u look at the moles of X then 1/3 x total pressure

 

[Manobilly]

When the Cyanide which reacts with h2so4. What conditions should we write?

 

[iKhaled]

idk y syed1995 everytime i see ur avatar i freak out lol

 

[MustafaMotani]

can ya solve that question?

ohk wait

 

[Manobilly]

Which variants are u ppl giving?

 

[iKhaled]

When the Cyanide which reacts with h2so4. What conditions should we write?

are you talking about the hyrolysis of nitriles ?

 

[Manobilly]

are you talking about the hyrolysis of nitriles ?

Yes!it is dilute h2so4 and reflux right?

 

[PANDA-]

Which variants are u ppl giving?

Marking scheme of w06 says H2SO4 + heat. Awesome, I can do "heat"

 

[Manobilly]

Marking scheme of w06 says H2SO4 + heat. Awesome, I can do "heat"

???

 

[iKhaled]

Yes!it is dilute h2so4 and reflux right?

yeah though i say dilute hydrochloric acid and heat under reflux but i guess dil. sulphuric acid is right too

 

[MustafaMotani]

X --- > Y + 2Z ( i dont knw jow to show reversible sign)
Initiall: moles 2 0 0 ( x disociated by 20% ... 0.4 of x converted to product)
2-0.4 0.4 0.8 ( I got Y and Z by mole ratio.. if 0.4 reacts then it will produce 0.4Y and 0.8Z)

P (x) = 1.6/2.8 x Tp
P (y ) =0.4/2.8 x Tp Tp = Total Pressure
P(z) = 0.8/2.8 x Tp

Just plug the values in the equation

Kp = P(y ) x (P(z))^2/P(x) (P(z))^2 because coefficients become power