AQA CHEM4 A2 Chemistry - 9 June 2014

OP

Original post by The Lawful T.J

It's all so confusing :frown:

"Be the change you wish to see in the world."

I will ask my teacher for you tommorrow :biggrin:

and I will put the method up. I think it's really a basis of learning something in the equilibrium section rather than relying on normal moles stuff from unit 1 like I did for this question.

Reply 21

mynameisntbobk

18

Original post by propagation

I will ask my teacher for you tommorrow :biggrin:

and I will put the method up. I think it's really a basis of learning something in the equilibrium section rather than relying on normal moles stuff from unit 1 like I did for this question.

Original post by The Lawful T.J

It's all so confusing :frown:

"Be the change you wish to see in the world."

Hope this makes sense

Reply 22

Original post by mynameisntbobk

Hope this makes sense

It does! Aha, but the method is weird :P

"Be the change you wish to see in the world."

Reply 23

mynameisntbobk

18

Original post by The Lawful T.J

It does! Aha, but the method is weird :P

"Be the change you wish to see in the world."

Haha I know what you mean. Just think about it though. You put x amount of H2 and z amount of I2 into the mixture. Y amount of HI was formed. Because 2moles of HI was formed, and H2 and I2 react in a 1:1 molar ratio, half the amount of y would have come from x and the other half from z. This leaves you with a certain amount of H2 and I2 left over. Z-(y/2) and x-(y/2)

Reply 24

Original post by mynameisntbobk

Haha I know what you mean. Just think about it though. You put x amount of H2 and z amount of I2 into the mixture. Y amount of HI was formed. Because 2moles of HI was formed, and H2 and I2 react in a 1:1 molar ratio, half the amount of y would have come from x and the other half from z. This leaves you with a certain amount of H2 and I2 left over. Z-(y/2) and x-(y/2)

O.o I don't like letters! :frown:

"Be the change you wish to see in the world."

Reply 25

OP

Original post by mynameisntbobk

Hope this makes sense

Thanks that's really helpful :biggrin:

Reply 26

LOL'd irl at title.

but yeah im starting CHEM4 duh asap, summer is gonna be sick.

school is doing some chem challenge, not really bothered with.

Reply 27

Original post by UKBrah

LOL'd irl at title.

but yeah im starting CHEM4 duh asap, summer is gonna be sick.

school is doing some chem challenge, not really bothered with.

Chem challenge? Sounds great!

"Be the change you wish to see in the world."

Reply 28

OP

Original post by UKBrah

LOL'd irl at title.

but yeah im starting CHEM4 duh asap, summer is gonna be sick.

school is doing some chem challenge, not really bothered with.

Because of how advance this is :P

Reply 29

Original post by propagation

Because of how advance this is :P

Hm?

Reply 30

OP

Original post by UKBrah

Hm?

The title....

Reply 31

Original post by propagation

The title....

brb gonna make a june 2014 thread for all my a2 exams

Reply 32

OP

Original post by UKBrah

brb gonna make a june 2014 thread for all my a2 exams

Funny guy

Reply 33

Original post by propagation

Funny guy

Lol haha.

but OT, is CHEM4 something you could learn over the summer?

Reply 34

TommehBoi

12

Original post by propagation

Hi,

This thread is in advance for people that will be preparing for this exam during the summer hoilday to give them a better chance this time next year. Hopefully it will be used up until the exam for revision and help.

Thanks for your time :biggrin:

Jesus christ, your life is obviously exciting.

Reply 35

Original post by TommehBoi

Jesus christ, your life is obviously exciting.

Well, when I probably have something like 15 exams next summer, I think it's better to start sooner, rather than later.

"Be the change you wish to see in the world."

Reply 36

mulac1

wow ... had to double check the title of the thread for a sec... this is very early I must say :wink:

Reply 37

OP

Original post by TommehBoi

Jesus christ, your life is obviously exciting.

It most certaintly is. I need a good grade in this unit as it's the harder unit out of 4 and 5.

Plus I am not going to be doing it all summer I am going to revise this moderatly, with a balance of doing stuff and work.

Reply 38

Original post by propagation

It most certaintly is. I need a good grade in this unit as it's the harder unit out of 4 and 5.

Plus I am not going to be doing it all summer I am going to revise this moderatly, with a balance of doing stuff and work.

Aha! I have to balance this, volunteering, this NCS thing, Duke of Edinburgh & my EPQ & Personal Statement :') fun times.

"Be the change you wish to see in the world."

Reply 39

OP