AQA CHM1 & CHM2 Jan 2004 Mark Schemes

Hey..I have past papers for AQA Chemistry Module 1 and Module 2 but no mark schemes and it's too late to get my teacher to mark them because it's 1/2 term now damn. So if anyone has the answers or mark schemes to Jan 2004 Mod 1 and Mod 2, I'd greatly appreciate it if you could scan it in and email them to me pleeeeeeeease :biggrin:

Thank you

Reply 1

xskater

6

AQA won't post them for ages and i don't think the colleges will have them.

If your stuck post the questions...i'm sure someone will answer them !!

Reply 2

Barny

17

I did the Module 2 paper in January, post the questions and Ill tell you the answers, it was pretty straight forward..

Reply 3

ShOcKzZ

7

Asphyxiating

Hey..I have past papers for AQA Chemistry Module 1 and Module 2 but no mark schemes and it's too late to get my teacher to mark them because it's 1/2 term now damn. So if anyone has the answers or mark schemes to Jan 2004 Mod 1 and Mod 2, I'd greatly appreciate it if you could scan it in and email them to me pleeeeeeeease :biggrin:

Thank you

i would but its about 20 pages..any particular questions?

Reply 4

Maisy

ShOcKzZ

i would but its about 20 pages..any particular questions?

Hi Hi I am trying to do January 2004 Chemistry Module 2 please could you tell me the answers for the following:

1.c
2.d,f,e
3.b,c,d,e,f
4.a,b
5.value of a and value of b

thanks thanks :biggrin:

Reply 5

ShOcKzZ

7

Maisy

Hi Hi I am trying to do January 2004 Chemistry Module 2 please could you tell me the answers for the following:

1.c
2.d,f,e
3.b,c,d,e,f
4.a,b
5.value of a and value of b

thanks thanks :biggrin:

1c

•

cost of energy/high temp (1 mark)

•

cost to contain plant (to resist high temp) (1 mark)

2d

•

increase concentration (or pressure) (1 mark)

2e

•

many (1 mark) more molecules have energy equal to or > activation energy (1 mark)

2f

•

alternate route (1 mark)

•

with a lower activation energy (1 mark)

3b,c,d,e,f

•

I-

•

with NaF - no change/colourless (1 mark)

•

with NaI - yellow solid precipitate (1 mark)

•

equation: I-(aq) + Ag+(aq) --> AgI (s) (state symbols needed 1 mark)

•

observation - steamy/misty/white fumes (1 mark)

•

equation: NaCl + H2SO4 --> NaHSO4 + HCl (1 mark) no state symbols

•

observation 1 - black grey solid/lilac purple gas/steamy choking fumes/steam

•

observation 2: yellow solid / smell of bad eggs / stink bombs (lol) (2 marks)

•

equation: 2NaI + 2H2SO4 --> Na2SO4 + 2H2O + I2 + SO2 (2 marks)

•

observation: starch, blue/black (1 mark)

•

equation: I2 + 2NaS2O3 --> 2NaI + Na2S4O6 or equ ionic eqn (1 mark)

4

•

electrons transferred (1)

•

equation: Ti)2 + C + 2Cl2 --> TiCl4 + CO2 (1)

•

ox agent: Cl2 (1)

•

Red agent: C (1)

•

equation: TiCl4 + 2Mg --> Ti + 2MgCl2 (2 marks)

•

condition 1: high temp (500-1000)

•

explanatation: to speed up reaction

•

condition 2 : Argon

•

explanation: Prevents oxidation of the Mg

5

•

A was a definition..so no value

•

B - -142

•

C - -89-91

Reply 6

Maisy

ShOcKzZ

[*]5.C - -89-91

Hey..thanks for all those answers! Just a few Qs tho..for the last question 5.c is that value supposed to mean -180? Anyways I get a totally different answer and I don't really understand how to work it out..if anyone else can help too cuz I don't understand these Qs at all, the question is..

In an experiment, an excess of solid magnesium oxide was added to 50cm3 of 3.0moldm-3 hydrochloric acid. The initial temp of the soln was 21 degrees C. After reaction the temp had risen to 53 C. (The specific heat capacity of water is 4.2 J,K-1,g-1)

Use this information to calculate the enthalpy change for the reaction of one mole of magnesium oxide with HCl. For your calculation you should assume that all the heat from the reaction is used to raise the temperature of 50g of water.

So what do I use for m (mass) in delta H = mCdeltaT? Is it the mass of water (50g) or is the mass of MgO or is it both added together? Either way I don't seem to be able to get -180 :frown:

Also for 1.c what do mean containing the plant to resist high temp? Can you rephrase that?

Can you give me the answers to 3.a and b? You put iodine but is that for a or b? And is b not astatine or is the halogen range from iodine to fluorine for the module?

For 3.c why does NaF + AgNO3 produce no change/colourless? How come it doesn't react? :frown:

For 3.e I get 2 equations:
H2SO4 + NaI --> NaHSO4 + HI
2HI + H2SO4 --> I2 + SO2 + 2H2O
so merging them together would it not make:
3H2SO4 + 2NaI --> 2NaHSO4 + I2 + SO2 + 2H2O?
I can't find an overall equation though so you might be right but why Na2SO4 not NaHSO4? Am I adding more NaI to the 2nd eq?
Anyone know an exact overall equation for H2SO4 + NaI?

For 4.b)i) the equation, does it form CO2 or can you have CO as well? cos in some notes in a book it says CO and another book says CO2? :frown:

4.b)ii) the metal can be Na or Mg right? and is the argon atmosphere to prevent oxidation of Mg or Na definitely or could it not be of Ti?

Thanks so much for your help, I really appreciate it!!

:biggrin:

Reply 7

supreme

4

Could someone do me a massive favour and send AQA Chemistry Module 1 and Module 2 to [email protected]. Thanks :smile:

Reply 8

MickyFinstar

Hi can u plz send jan aqa module 1 and 2 to my email [email protected]
P.S if u have module 3 that would be appreciated too

Reply 9

Asphyxiating

OP

2

ShOcKzZ

i would but its about 20 pages..any particular questions?

Hey hey do you think you could quickly let me know the answers to (Module 1 Jan 2004)

1.a) (ii) and (iii)
1. c) and d)
2. a) d)
3. a) iv)
3. b) ii)
4. a)
4. b) i)ii)iii)
6. a)

Thank you, I really appreciate it! Most of the answers are numerical I think so shouldn't take too long, thanks so much!! Thankssssssssss :biggrin:

Reply 10

ShOcKzZ

7

Asphyxiating

Hey hey do you think you could quickly let me know the answers to (Module 1 Jan 2004)

1.a) (ii) and (iii)
1. c) and d)
2. a) d)
3. a) iv)
3. b) ii)
4. a)
4. b) i)ii)iii)
6. a)

Thank you, I really appreciate it! Most of the answers are numerical I think so shouldn't take too long, thanks so much!! Thankssssssssss :biggrin:

1.a) ii) - chemical properties depend on the no or amount of outer electrons OR isotopes have the same elecron config / same number of é

iii) - 23/6.023 x 10^23 --> 3.8(2) x 10^ -23

1.

c - highest energy é / outer é / last é in 3(d) sub-shell OR d sub shell being filled / is incomplete OR highest energy sub shell is 3(d)

d - N with mass 15, atomic number 7.

2. a) d)

(50 x0.043) + (52x0.838) + (53x0.095) + (54x0.024) = 52.06/52.05

3. a) iv) 0.0134 moles, 1.13g, 90%

3. b) ii) Na2SO3 + 2HCl --> 2NaCl + H2O + SO2 OR ionic
4. a) pV =nRT ----> 80-80.3
4. b) i) BaCl2 or barium nitrate/hydroxide/ethanoate
ii) white precipitate / solid / suspension
iii) Ba2(+) + SO4(2-) --> BaSO4

Reply 11

Asphyxiating

OP

2

ShOcKzZ

1.a) ii) - chemical properties depend on the no or amount of outer electrons OR isotopes have the same elecron config / same number of é

iii) - 23/6.023 x 10^23 --> 3.8(2) x 10^ -23

1.

c - highest energy é / outer é / last é in 3(d) sub-shell OR d sub shell being filled / is incomplete OR highest energy sub shell is 3(d)

d - N with mass 15, atomic number 7.

2. a) d)

(50 x0.043) + (52x0.838) + (53x0.095) + (54x0.024) = 52.06/52.05

3. a) iv) 0.0134 moles, 1.13g, 90%

3. b) ii) Na2SO3 + 2HCl --> 2NaCl + H2O + SO2 OR ionic
4. a) pV =nRT ----> 80-80.3
4. b) i) BaCl2 or barium nitrate/hydroxide/ethanoate
ii) white precipitate / solid / suspension
iii) Ba2(+) + SO4(2-) --> BaSO4

Thanks for that :biggrin:

AQA CHM1 & CHM2 Jan 2004 Mark Schemes

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