[atman7]

(Original post by sumsum123)
I keep on getting 3.157 "/. I dont know what is going wrong.

They used salt/acid rather than other way round I think I'm settling with them being wrong


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[sumsum123]

(Original post by atman7)
They used salt/acid rather than other way round I think I'm settling with them being wrong


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That has to be wrong right :L , did the book confuse the two methods?

[otrivine]

(Original post by atman7)
buffers are calculated differently You can't work out the pH of both and add them together. Lol this is bugging me I'm dying to know if I'm wrong or the book is!

Did you manage to look over the other calculations earlier?


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yes i wrote them all down in a piece of paper so that i can revise it during the weekend
trust me by monday i am going to become a pro on these calculations
can we test each other on different staffs then monday if you can test me on calculations

[arvin_infinity]

(Original post by sumsum123)
That has to be wrong right

ys it has to be right! wrong?

[atman7]

(Original post by sumsum123)
That has to be wrong right :L , did the book confuse the two methods?

It must have done because the first question was all fine and then after that every questions followed a different method and lead to the wrong answer!

(Original post by otrivine)
yes i wrote them all down in a piece of paper so that i can revise it during the weekend
trust me by monday i am going to become a pro on these calculations
can we test each other on different staffs then monday if you can test me on calculations

That's good to hear all it takes is practice I used to be pretty crap at them now it's all a daudle! Yeah sure I'll test you on it Monday if I'm not doing a lot of bio then I'll probably finish chemistry tonight


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[otrivine]

(Original post by atman7)
It must have done because the first question was all fine and then after that every questions followed a different method and lead to the wrong answer!



That's good to hear all it takes is practice I used to be pretty crap at them now it's all a daudle! Yeah sure I'll test you on it Monday if I'm not doing a lot of bio then I'll probably finish chemistry tonight


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are you doing f 215 and f214 if so i am doing them as well and thanks for the help of calculation ,
ok
Define 1st electron affinity(1) and give the formula for calculation born haber cycle in solution (1)

[sumsum123]

(Original post by arvin_infinity)
ys it has to be right! wrong?

I dont understand what you are saying here . I was saying the book has to be wrong.

[arvin_infinity]

(Original post by sumsum123)
I dont understand what you are saying here . I was saying the book has to be wrong.

Ignore me ..am going crazy with these exams!


Em anyone wants to correct/add to this:
This is the condition for the formation of cis/trans

• 4 coordinate complex with a square planar shape- 2 different ligands 2 of one and 2 of another
• Octahedral (6 coordinate complex) - 2 different ligands - 4 of one and 2 of another one
• Octahedral (6 coordinate complex ) 3 bidentate or 2 bidentate +2 mono dentate or 1 bidentate + 4 monodentate

[atman7]

(Original post by otrivine)
are you doing f 215 and f214 if so i am doing them as well and thanks for the help of calculation ,
ok
Define 1st electron affinity(1) and give the formula for calculation born haber cycle in solution (1)

Yeah I'm doing all the A2 exams for both chemistry and biology trying to bump up much as I can so I can meet my offers

1st electron affinity is the enthalpy change that accompanies the addition of an electron to each atom in one mole of gaseous atoms to form one mole of gaseous 1- ions.

Cl (g) + e- >>>> Cl-(g)

Calculation is

I do formation - (everything else)

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[otrivine]

(Original post by atman7)
Yeah I'm doing all the A2 exams for both chemistry and biology trying to bump up much as I can so I can meet my offers

1st electron affinity is the enthalpy change that accompanies the addition of an electron to each atom in one mole of gaseous atoms to form one mole of gaseous 1- ions.

Cl (g) + e- >>>> Cl-(g)

Calculation is

I do formation - (everything else)

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brilliant full marks my turn
really what course and uni?

[sumsum123]

(Original post by arvin_infinity)
Ignore me ..am going crazy with these exams!


Em anyone wants to correct/add to this:
This is the condition for the formation of cis/trans

• 4 coordinate complex with a square planar shape- 2 different ligands 2 of one and 2 of another
• Octahedral (6 coordinate complex) - 2 different ligands - 4 of one and 2 of another one
• Octahedral (6 coordinate complex ) 3 bidentate or 2 bidentate +2 mono dentate or 1 bidentate + 4 monodentate

lool its okay. The last point would be for optical isomerism I think because the conditions for optical isomerism is:
A complex with three bidentate
A complex with two monodentate and two bidendate
A complex with a hexadentate

[atman7]

(Original post by otrivine)
brilliant full marks my turn
really what course and uni?

Pharmacy my firm is UCl. And Aston is my insurance I'm a resit though so everything's bumped up I need AAA for my firm and AAB for Aston. I have one A already it's just the sciences to work on! How about you what you applied for and which uni?

List three limitations of hydrogen fuel cells 3 marks
List two advantages and disadvantage of hydrogen fuel cells 4 marks
Why is a methanol fuel cell have greater advantages over hydrogen fuel cell
2 marks


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[otrivine]

(Original post by atman7)
Pharmacy my firm is UCl. And Aston is my insurance I'm a resit though so everything's bumped up I need AAA for my firm and AAB for Aston. I have one A already it's just the sciences to work on! How about you what you applied for and which uni?

List three limitations of hydrogen fuel cells 3 marks
List two advantages and disadvantage of hydrogen fuel cells 4 marks
Why is a methanol fuel cell have greater advantages over hydrogen fuel cell
2 marks


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ohhhhhh my gooooooooodddddddd we are going to be classmates i chose UCL pharmacy as well and got AAB offer!!
1) cannot predict rate reaction only equilbiria as rate could be slow and with high activation energy
due to aqueous equilbria
different reactions may have different conditions
2)advantages - greater efficieny and less co2 produced 2 disadvantages - expensive and more energy is needed to carry out process(energy carriers)
3) methonal because is generated from biomass and can be easiliy transported as it is in liquid form

[atman7]

(Original post by otrivine)
ohhhhhh my gooooooooodddddddd we are going to be classmates i chose UCL pharmacy as well and got AAB offer!!
1) cannot predict rate reaction only equilbiria as rate could be slow and with high activation energy
due to aqueous equilbria
different reactions may have different conditions
2)advantages - greater efficieny and less co2 produced 2 disadvantages - expensive and more energy is needed to carry out process(energy carriers)
3) methonal because is generated from biomass and can be easiliy transported as it is in liquid form

Hopefully! I firmed them last year but then cocked up hopefully this time round it works out okay! Have you applied for accommodation yet?

All right except the first question you went for reasons why standard electrode potentials are limited not hydrogen fuel cells. Could have gone for things like large scale transportation is difficult, fuel cells use toxic chemicals in there production, absorbers and absorbers have limited lifeline

My turn!


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[otrivine]

(Original post by atman7)
Hopefully! I firmed them last year but then cocked up hopefully this time round it works out okay! Have you applied for accommodation yet?

All right except the first question you went for reasons why standard electrode potentials are limited not hydrogen fuel cells. Could have gone for things like large scale transportation is difficult, fuel cells use toxic chemicals in there production, absorbers and absorbers have limited lifeline

My turn!


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oh yes true! wait did you apply with to LSOP last year? what did u get cause i heard they accepted people with lower offers. no i did not apply for accommodation as i live in London so no need.

1) Suggest which indicators to use for strong acid and strong base(2)

[atman7]

(Original post by otrivine)
oh yes true! wait did you apply with to LSOP last year? what did u get cause i heard they accepted people with lower offers. no i did not apply for accommodation as i live in London so no need.

1) Suggest which indicators to use for strong acid and strong base(2)

I had an interview a few weeks ago with dr mike munday the guy that did the speech he was saying to me how people with Abb got In last year, I only got ACC. So I was gutted he said this year if the same happens just be sure to ring in quickly he told me he'd reckon they'd give me a place if I get AAB should I call immediately. As it stands I'm on ABB 27 off an A in chem it's just coursework boundaries are ridiculous at A2 last year 35/40 was an A so UMS wise it's difficult. I'm aiming fit AAA but really wanna push for the A in this I'd rather go Aston than somewhere else should I not be able to get into ucl.

Methyl orange and the spelling of this next one I can't quite remember phenoplothian?


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[otrivine]

(Original post by atman7)
I had an interview a few weeks ago with dr mike munday the guy that did the speech he was saying to me how people with Abb got In last year, I only got ACC. So I was gutted he said this year if the same happens just be sure to ring in quickly he told me he'd reckon they'd give me a place if I get AAB should I call immediately. As it stands I'm on ABB 27 off an A in chem it's just coursework boundaries are ridiculous at A2 last year 35/40 was an A so UMS wise it's difficult. I'm aiming fit AAA but really wanna push for the A in this I'd rather go Aston than somewhere else should I not be able to get into ucl.

Methyl orange and the spelling of this next one I can't quite remember phenoplothian?


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so if they gave me AAB offer then then they will accept with ABB in other words??
yes thats correct

[atman7]

(Original post by otrivine)
so if they gave me AAB offer then then they will accept with ABB in other words??
yes thats correct

Very likely last year they accepted about 30 with ABB this year he said it'll only be about a 12-15 cause it's out of there control cause ucl set it but usually LSOP was very lenient on letting people in with less. Key is just to get your results early sometimes ucas is updated early so you can see if your in or not as well that's usually before it shuts down. Then after its just chaos to even get onto it.

Define ligand, complex ion, coordinate bond,
Give an example of a bidentate ligand
Give one use of a hexadentate ligand


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[otrivine]

(Original post by atman7)
Very likely last year they accepted about 30 with ABB this year he said it'll only be about a 12-15 cause it's out of there control cause ucl set it but usually LSOP was very lenient on letting people in with less. Key is just to get your results early sometimes ucas is updated early so you can see if your in or not as well that's usually before it shuts down. Then after its just chaos to even get onto it.

Define ligand, complex ion, coordinate bond,
Give an example of a bidentate ligand
Give one use of a hexadentate ligand


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really when they say 12-15 are those candidates like who performed well in their interview cause i did get a letter from them saying you had successful interview and excellent academic background and therefore making you a conditional offer?
did not revise this part please from chapter 1 and 2 ? finsihing chapter 3 transition on monday

[atman7]

(Original post by otrivine)
really when they say 12-15 are those candidates like who performed well in their interview cause i did get a letter from them saying you had successful interview and excellent academic background and therefore making you a conditional offer?
did not revise this part please from chapter 1 and 2 ? finsihing chapter 3 transition on monday

I think its basically first come first serve my interview wasn't even long I spent more time asking about them than they asked me questions. So it's really unlikely that it'll be down to interview.
No worries I'll keep off that Erm describe how a buffer works 5/6/7 marks?


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