Year 12s: what will be the first way you research your future options? >>

C3 edexcel june 2016 unofficial mark scheme

Scroll to see replies

Reply 20

VjM

The formula for butane was C4 H10

Reply 21

VjM

Original post by elmxxxx

What was the exact (roughly) question about turning alkaline? Can't remember answering a question like this, how was it worded? Also, the one about showing a dissolved solid in hard water, was it about boiling for limescale , or the sulphate test, I wrote about calcium sulphate being in hard water so therefore the Sulphate test eg white precipitate but others wrote about boiling causes lime scale which makes more sense I guess since it was in water section

I can't remember exactly but it said when ammonia dissolves in water, what is the thing that causes the water to turn alkaline? And for the dissolved ions it was something like a test that doesn't involve soap to show the dissolved ions. I said to heat it and the crystalline solid that remains shows the solid that was dissolved. Also, I described the test for calcium ions using sodium hydroxide.

Reply 22

Ahadmerc

What did you guys get for the first calculation question? I think I remember getting 40 point something. For the second calculation question, the answer was 12.5.

Reply 23

harry_16

I didn't write about boiling the water for lime scale but other people in my class wrote about that as well :/

I said that you should heat the water to evaporate the solvent which is the water in order to leave the solid pieces but that could be wrong.

Posted from TSR Mobile

Reply 24

WhyAmI

What did you guys get for the ionic equasion multiple choice question?

Reply 25

harry_16

I got 2.4 for the first calculation because it was 1 mol of the reactant with 1 mol of the product and I found 0.1 for the moles of the reactant so 0.1 x 24

Posted from TSR Mobile

Reply 26

VjM

For the second calculation, did you have to divide by 1000? And what was the answer?

Reply 27

MathsMaxMapsMats

Does anyone have the entire paper or, at least, all the questions?

Reply 28

VjM

Original post by WhyAmI

What did you guys get for the ionic equasion multiple choice question?

Do you remember the question specifically?

Reply 29

glowanti

Original post by WhyAmI

What did you guys get for the ionic equasion multiple choice question?

the most simple one I can't remember what it was now, C maybe

Reply 30

L0st45

Original post by VjM

I wrote nitrogen hydroxide, would i get a mark?

I don't think you will unfortunately, because it asked for the ion, which was hydroxide, OH^-.

Reply 31

VjM

The half equation of bromine was 2br- -> br2 +2e-

Reply 32

TheMasterofLife

Original post by MohAhmedRS

did you have to specify that it was Ethene, Ethanol, Ethanoic Acid and Ethane or could you have just written Alkene, Alcohol, Carboxylic acid Acid and Alkane

I didnt specify but hopefully that wont lose me any marks because my explanantions were correct! 🙏🏽

Reply 33

harry_16

What did everyone get for the first calculation about the volume of the gas? I got 2.4

Posted from TSR Mobile

Reply 34

harry_16

What did everyone get for the first calculation about the volume of the gas? I got 2.4

Posted from TSR Mobile

Reply 35

harry_16

What did everyone get for the first calculation?

Posted from TSR Mobile

Reply 36

TheMasterofLife

Did you have to describe the titration method for the first six marker?

i got 2.4 aswell\

Original post by TheMasterofLife

Did you have to describe the titration method for the first six marker?

Yes, and then talk about obtaining crystals by heating and evaporating

Reply 39

waudy

I found the questions easy bar one, a question regarding equilibrium and the Haber process, it said that the production of ammonia gas increase if the temperature increase but if im not mistaken the production of ammonia in the forwards direction has a Equilibrium constant such that decreasing the temperature will favour the forwards reaction or am i misreading the question?

Quick Reply

Related discussions

Latest

Articles for you

Edexcel A-Level Economics Paper 1 - Unofficial Mark Scheme - 18 May 2023

A guide to GCSE and A-level grade boundaries

What is an LLM and how could it benefit your career?

Powerful questions business students forget to ask their career advisers

C3 edexcel june 2016 unofficial mark scheme

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you