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AQA GCSE Chemistry - C2 & C3 (14th May 2015)

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Reply 560

rumana101

Original post by RotomGuy

Adhesives too, right?

yup, think so

Reply 561

TheClassicsGeek

Original post by hld123

I put 55 because it was 30 for the maximum temperature and then there was already 25 of alkali in the flask. I don't know if that is right though...

Yeah it was 55 i think. They were adding 5cm continuously so they added 30cm in total + the 25 = 55.

Reply 562

rumana101

Original post by Palette

Would

1) fuels
2) production of esters for perfumes

get two marks?

yeah

Reply 563

WanderLost225

Original post by unknowntsr

for the total volume of acid in C3, last question did anyone put 35 or is that just me (5cm3 of hydrochhloric acid plus 30 more???)

Was total volume of the solution which included 25 cm3 of hydroxide or something + 30cm3 acid= 55cm3

Reply 564

hld123

Original post by chloemurphy1999

for c3 what were the uses of ethanol? You had to give 2 but i could only remember fuels :frown:

I put solvent and that it is used to make alcoholic drinks.

Reply 565

hld123

Original post by Nomes24

Was total volume of the solution which included 25 cm3 of hydroxide or something + 30cm3 acid= 55cm3

what did you get for the total energy change calculation?

Reply 566

harryleavey

Original post by TheMarkScheme

Yes that is completely wrong. The answer is Sodium Chloride.

Are you sum sorta TROLL?!

The answer is aluminium oxide

makeal.gif4.4KB

Reply 567

AvKar

Original post by hld123

I put solvent and that it is used to make alcoholic drinks.

Wasn't alcoholic drinks already given?

Reply 568

mghp

Original post by hld123

I put aluminium oxide instead of bauxite for the electrolysis question. Is that wrong?

I put that!! Hope it's right

Reply 569

WanderLost225

Original post by hld123

what did you get for the total energy change calculation?

I got 4620 J or something like that :smile:

what about you?

Wasn't sure if total temperature rise was 20 degrees or 14 degrees but went with 20.. oh well. ECF marks anyway.

Reply 570

Palette

Original post by AvKar

Wasn't alcoholic drinks already given?

Yes, the question did ask for the uses of ethanol other than alcoholics drinks.

Reply 571

rumana101

Original post by hld123

I put solvent and that it is used to make alcoholic drinks.

it already said alcoholic drinks in the question you had to name two other uses

Reply 572

huzza

guys what did you put for which halogen is needed to make chlorine from sodium chloride...... i think that was the question

Reply 573

mghp

Original post by spnlove

Do you think they'd accept if you said because it could be bent?

I Ireckon so because that implies that it is too soft

Reply 574

swbk

What did you guys get for the overall temperature change? I got 14 but some people are saying 20:/...

Reply 575

TheTruthTeller

What did you guys put for the silver nitrate question in c2 - the 1 marker.

Reply 576

WanderLost225

Original post by huzza

guys what did you put for which halogen is needed to make chlorine from sodium chloride...... i think that was the question

Fluorine

Reply 577

RotomGuy

Original post by swbk

What did you guys get for the overall temperature change? I got 14 but some people are saying 20:/...

14. Where the heck did people get 20 from?

Reply 578

rumana101

what did everyone get for the flame tests on c3

Reply 579

TheMarkScheme

Original post by unknowntsr

I think around 45/44 for C3, A star but thats just me

Shutup and send nudes. Make sure the file is png format.

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AQA GCSE Chemistry - C2 & C3 (14th May 2015)

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