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OCR GCSE Chemistry Gateway A 9-1 UNOFFICIAL MARK SCHEME

Gcse12345678

Come through with the answers...

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Reply 1

Gcse12345678

For the chromatography question I think it was substance diveded by solvent

Reply 2

Evil Homer

TSR Community Staff

Original post by Gcse12345678

Come through with the answers...

What Exam board is this for?

Reply 3

Gcse12345678

Who done the balancing equation question right for the last ever question... it took so long

Reply 4

Gcse12345678

What did you guys get for the bond enthalpy question?

Reply 5

Gcse12345678

OCR Gateway A Higher

Original post by Evil Homer

What Exam board is this for?

Reply 6

Smartly superior

Original post by Gcse12345678

Who done the balancing equation question right for the last ever question... it took so long

3Pb + 8HNO3 --> 3Pb(NO3)2 + 2NO + 4H2O

(edited 4 years ago)

Reply 7

Smartly superior

-409

Original post by Gcse12345678

What did you guys get for the bond enthalpy question?

Ocr

So who did the OCR Single higher chemistry paper 3? was the last question about electrolysis? cuz I feel like I missed a page

Reply 10

username4598946

Original post by Jazz.xox

So who did the OCR Single higher chemistry paper 3? was the last question about electrolysis? cuz I feel like I missed a page

Yep the paper 3 is the one that was done this morning. The higher paper's last question was on balancing reactions and molar stuff.

Reply 11

Jazz.xox

it was after the electrolysis question?

Reply 12

Sports

What was the bond energy answer. I got something like 272

Reply 13

Smartly superior

Original post by Sports

What was the bond energy answer. I got something like 272

-409

Reply 14

Smartly superior

yes

Original post by Jazz.xox

it was after the electrolysis question?

well, ****

Was the answer for the last question 0.01mol?

Reply 17

Smartly superior

Original post by Y.meric

Was the answer for the last question 0.01mol?

no, 0.10

Reply 18

Sports

the paper was harder than last years definitely

Reply 19

username4598946

Original post by Smartly superior

no, 0.10

Yep 0.10 is correct as the ratios of Pb and Pb(NO3)2 are the same, so just do 20.7g/207.2 to get something like 0.0999, which to 2 s.f. is 0.10

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OCR GCSE Chemistry Gateway A 9-1 UNOFFICIAL MARK SCHEME

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