Chemistry c2 unit 2 aqa monday gcse 20th new spec

2 (a) (ii) How does a hydrogen ion change into a hydrogen atom?
2 (c) (i) Which ion makes the waste alkaline?
4 (c) (ii) What information does the molecular ion peak give about the molecule?
5 (c) (ii) Sodium iodide contains sodium ions (Na+) and iodide ions (I
–
).
Describe, as fully as you can, what happens when sodium atoms react with iodine atoms
to produce sodium iodide.
5 (c) (v) What is formed at the negative electrode when sodium iodide solution is electrolysed?

Can you answer these question for me please from the 2013 exam.

Reply 61

kam123456

Original post by sammann123

I haven't

2 (a) (ii) How does a hydrogen ion change into a hydrogen atom?
2 (c) (i) Which ion makes the waste alkaline?
4 (c) (ii) What information does the molecular ion peak give about the molecule?
5 (c) (ii) Sodium iodide contains sodium ions (Na+) and iodide ions (I
–
).
Describe, as fully as you can, what happens when sodium atoms react with iodine atoms
to produce sodium iodide.
5 (c) (v) What is formed at the negative electrode when sodium iodide solution is electrolysed?

Can you answer these question for me please from the 2013 exam.

Reply 62

GuitaringMedic

2

Original post by kam123456

2 (a) (ii) How does a hydrogen ion change into a hydrogen atom?
2 (c) (i) Which ion makes the waste alkaline?
4 (c) (ii) What information does the molecular ion peak give about the molecule?
5 (c) (ii) Sodium iodide contains sodium ions (Na+) and iodide ions (I
–
).
Describe, as fully as you can, what happens when sodium atoms react with iodine atoms
to produce sodium iodide.
5 (c) (v) What is formed at the negative electrode when sodium iodide solution is electrolysed?

Can you answer these question for me please from the 2013 exam.

Really? God.
It gains an electron.
The hydroxide.
Its Mr- relative molecular mass.
Sodium loses an electron from its outer shell to become Na+ with a full outer shell. Iodine gains an electron on its outer shell to become I- with a full outer shell. The oppositely charged ions are held together by an electrostatic force between the two opposite charges.
Hydrogen as it is less reactive than sodium.

(edited 10 years ago)

Reply 63

kam123456

Original post by sammann123

Really? God.
It loses an electron.
The hydroxide.
Its Mr- relative molecular mass.
Sodium loses an electron from its outer shell to become Na+ with a full outer shell. Iodine gains an electron on its outer shell to become I- with a full outer shell. The oppositely charged ions are held together by an electrostatic force between the two opposite charges.
Sodium as it is the positive ion.

thanks i really appreatiate it!
one more question- 1 (a) Explain why the solution goes cloudy

Reply 64

kam123456

Original post by SaraB_

I remember doing this as our mock and it's because the sulfur forms a precipitate. :smile:

Its worth 2 marks so what would the other point be. Do u have the mark scheme for this ?

Reply 65

dannywelbeck123

1

Original post by kam123456

Its worth 2 marks so what would the other point be. Do u have the mark scheme for this ?

here you go

AQA-CH2HP-W-MS-Jan13.pdf123.3KB

Reply 66

kam123456

Original post by SaraB_

No our teacher just went through it on the board. And 1 mark is for the sulfur forms 1 mark is for a precipitate/ solid

oh thanks

Reply 67

Simpliey

I've got the mark scheme for the Jan2013 paper o.o

Reply 68

Bballerjl

Original post by sammann123

I'm not entirely sure about this method, i've done the past paper this question is from and they're looking for a basic description of a titration essentially.. Hence the wording of the question 'the amount' needed..

Its the exact method from the book but i just deleted the irrelevant data that was specific to their experiment....

Reply 69

Elm Tree

13

Anyone else find it laughably easy? :rofl2:

Reply 70

subjunctivehistorian

16

So how did everyone find it? I actually thought it was alright, and the 6 mark question was completely unexpected haha... hope it went well for everyone!! :smile:

Reply 71

subjunctivehistorian

16

Original post by Elm Tree

Anyone else find it laughably easy? :rofl2:

Yes, I thought it was much easier than past papers I've done.

Reply 72

Elm Tree

13

Original post by ZeniB

So how did everyone find it? I actually thought it was alright, and the 6 mark question was completely unexpected haha... hope it went well for everyone!! :smile:

Original post by ZeniB

Yes, I thought it was much easier than past papers I've done.

The 6 mark question threw me off when I saw how long the answer lines were.
What did you write on it?

Reply 73

9examsleft

I thought it was the hardest paper ever! Anyone got any answers they know for definite?

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Reply 74

TryandAchieve

Definitely the hardest test ever!

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Reply 75

theopokulypse

Original post by Simpliey

I've got the mark scheme for the Jan2013 paper o.o

Please can you send it to me

Reply 76

subjunctivehistorian

16

Original post by Elm Tree

The 6 mark question threw me off when I saw how long the answer lines were.
What did you write on it?

I wrote about how you would react the magnesium ribbon with different % concentrations of the acid, I cant remember what it was :L and then measure the rate of reaction by measuring the amount of Hydrogen gas produced in a minute. For the fair test I said I would use the same sized piece of magnesium each time and repeat the experiment to make it reliable and detect anomalies.
Then I did a risk assessment. Basically I just wrote anything I could think of that might have some relevance to the question... :smile:

Reply 77

9examsleft

Original post by TryandAchieve

Definitely the hardest test ever!

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Agreed!

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