[Chlomc]

(Original post by daniya12)
the question asked why yield would increase if pressure increased:
the answer: because there ar eless particles from the forward reaction.

its a classic question and comes up on every past paper, this is exactly what the mark schemes say

Can you remember what the 1st questions were about?

[kkkkkatie]

for the question that was like 'why if the temp is increased does the yield decrease?' was the answer because the reaction is exothermic

[Zahirajavaid]

(Original post by HopelessTurtle)
Alkaline was OH- ions,
and the other one about the Ph being 1, was H+ ions.

Thank god I wrote that


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[Zahirajavaid]

(Original post by kkkkkatie)
for the question that was like 'why if the temp is increased does the yield decrease?' was the answer because the reaction is exothermic

That's what I wrote


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[kkkkkatie]

(Original post by Zahirajavaid)
How comes u multiplied it by 34
Sorry it's just I can't remember what answer I got I only remember how I worked it out


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beacuse 34 was the Mr of the whole of ammonia or something, like 2N + 6H = 34

[daniya12]

yep thats right, you had to say exothermic

[Zahirajavaid]

(Original post by kkkkkatie)
beacuse 34 was the Mr of the whole of ammonia or something, like 2N + 6H = 34

Oh thanks
I got the last part of the question wrong


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[Sheel1]

(Original post by daniya12)
the question asked why yield would increase if pressure increased:
the answer: because there ar eless particles from the forward reaction.

its a classic question and comes up on every past paper, this is exactly what the mark schemes say

The exam was Hard!!!

What did you write. so far by looking at what you lot wrote i lost about 10 ( lowest hope it doesnt keeo going )

[osama2]

guys sorry to say but the grade boundaries will be ridiculously high. it might even exceed the all time high of 38 for an A*...

[kkkkkatie]

does anyone have any idea roughly what the grade boundaries will be?

[osama2]

(Original post by kkkkkatie)
does anyone have any idea roughly what the grade boundaries will be?

guys sorry to say but the grade boundaries will be ridiculously high. it might even exceed the all time high of 38 for an A*...

[charlie279]

i though this was quite easy, but after a year of a level chemistry anything seems easy haha

[Princess008]

what was the answer ti were you had to tick?

[toshi44]

Hey does anyone know or have the unofficial mark scheme ???? exam weren't actually that bad

[Sheel1]

(Original post by osama2)
guys sorry to say but the grade boundaries will be ridiculously high. it might even exceed the all time high of 38 for an A*...

I hope not! I need an A for this test ( 80 UMS ) !! ;( And i made such STUPID mistakes

[charlie279]

(Original post by Princess008)
what was the answer ti were you had to tick?

hydrogen less reactive i think

[osama2]

hydrogen less reactive

[jdudley]

(Original post by tssf_skye)
I can't remember the questions exactly, but what did everyone write for the stuff on ammonia?

There was one about the yield and pressure.. i can't really remember haha

one of the questions for the yield with the 80kg was the maximum product produced and it actually produced 12kg, that was 15%

[Chlomc]

(Original post by osama2)
guys sorry to say but the grade boundaries will be ridiculously high. it might even exceed the all time high of 38 for an A*...

What makes you say that?

[Princess008]

i wrote hydrogen is a gas