Chemistry MAY/JUNE 2017 - P 22

[jkdrj02]

Was the paper really easy or a teeny weeny bit harder than earlier years? I'm not sure if it was a little bit harder or it was just because i was nervous.

 

[Muzammil ahmad]

Harder?
U gotta be joking .
It was the easiest paper ever

 

[Hanzalla]

Harder?
U gotta be joking .
It was the easiest paper ever

I've lost a few marks due to my carelesess-ness xD

 

[Muzammil ahmad]

In which question
And what mistake did you make?

 

[Hanzalla]

In the energy diagram i forgot to label progress of reaction.
I attempted the question with the Reversible reaction.
In the second last part, about speed of reaction with weak/strong acid, I doubt they'll give me full marks (idk it was of 2/3 marks).
I did the last part wrong (name 2 salts) 1 mark.

 

[Muzammil ahmad]

I am expecting full in p2
XD

 

[Muzammil ahmad]

In the energy diagram i forgot to label progress of reaction.
I attempted the question with the Reversible reaction.
In the second last part, about speed of reaction with weak/strong acid, I doubt they'll give me full marks (idk it was of 2/3 marks).
I did the last part wrong (name 2 salts) 1 mark.

There was no speed of reaction question
Do you remember the wordings..?

 

[Hanzalla]

There was no speed of reaction question
Do you remember the wordings..?

I don't even remember xD . It said describe an experiment to show that HCl is a stronger acid then Ethanoic Acid

 

[Hanzalla]

I wrote add zinc to both the solutions of acids, zinc will react with the stronger acid but will not/slowly react with the weaker acid

 

[Muzammil ahmad]

We had to write about titration
The stronger acid has more H+ ions
So it would need more alkali for neutralisation
The weak would be the opposite
I was lucky that I had attempted this question before xD
So, mark scheme yaad thi sari

 

[Hanzalla]

A

We had to write about titration
The stronger acid has more H+ ions
So it would need more alkali for neutralisation
The weak would be the opposite
I was lucky that I had attempted this question before xD
So, mark scheme yaad thi sari

And what about the last part ?

 

[Muzammil ahmad]

Question Kya Tha xD
Seriously, I dont remember any question

 

[Hanzalla]

Question Kya Tha xD
Seriously, I dont remember any question

2 salts formed on reaction of Nitrogen Dioxide with Potassium Hydroxide

 

[Muzammil ahmad]

Kno3 and kno2 was the answer
Not sure I don't remember the answer I wrote
But I guess it was similar to what I mentioned

 

[faseeh1999]

anyone did P21 of chemistry?

 

[jkdrj02]

Kno3 and kno2 was the answer
Not sure I don't remember the answer I wrote
But I guess it was similar to what I mentioned

Thanks. I wanted to know the answer for that part. It was at the last moment when i was going through the paper i saw that i had left that part blank to write the answer later and the invigilator asked us to stop writing just then. But anyway, good luck to everyone writing the biology paper today.

 

[Muzammil ahmad]

Lol those who studied hard will get rewarded
According to their hardwork
I don't think there was need to "pfft"..
-_-

 

[iamhereforfun]

Guys what do you all expect the A* mark to be ? 125-130?

 

[jkdrj02]

Guys what do you all expect the A* mark to be ? 125-130?

I think its going to be around 127 or 128.