The Student Room Group
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>

OCR A Level Chemistry - Paper 1 Physical 5th June 2018 Unofficial Markscheme

Scroll to see replies

Original post by bobtheblob123
Ionic radius !!!! >_<


Aha sorry I meant this - I did actually put this in the exam ;D
Hey everyone,

I got an A* in chemistry last year. I did the OCR A new spec.

I've published my notes on my site and you can get hold of them over here: https://lifeofamedic.ecwid.com

I have a set on Organic Chemistry and another set of notes on the Practical Techniques which will be useful for the 3rd paper.

If you have any questions at all, please feel free to email me: [email protected]
(edited 5 years ago)
Reply 502
Avatar for ireti
ireti
13
apparently with the definitions one, technically the paper said "explain" and not "define" so they may be able to get away with it
Reply 503
Avatar for Ortho
Ortho
4
Yo, that areniuhus thing, what were the units? I got 7.00 thinking it’s in kjmol
Predictions for Paper 2?
What do people think grade boundaries will be???
remind me of the Kc NAOH question, idr
Original post by cian27
Was a square planar shape so 90 not 109.5

that doesn't mean that there isn't a bond angle of 109.5, its 90 around the Pt, 109.5 around the N in NH3 attached to the Pt
Original post by IssyBoii
that doesn't mean that there isn't a bond angle of 109.5, its 90 around the Pt, 109.5 around the N in NH3 attached to the Pt


NH3 is 107
Please did anyone remember the titration with Na2S03 question?
Thanks
Reply 510
Avatar for Qxzzzz
Qxzzzz
3
Original post by Amelia2163
I got 6550 for the activation energy and e^31.3 for A
that’s what I got exactly! Yay
Reply 511
Avatar for Qxzzzz
Qxzzzz
3
Original post by C_Heaf
I got Step 1: Fe3+ + 2I- --> FeI2 + e-
Step 2: Fe3+ + FeI2 + e- --> 2Fe2+ + I2
that’s what I got!!
Original post by bonbon_21
NH3 is 107


Yeah, but NH3 + Pt =4 bonding pairs no lone pairs... tetrahedral 109.5 :tongue:
anyone else get +756 for the bond enthalpy for F-F :colondollar: all I'm seeing is 158, or 504 :/
Original post by _hxbiba_
anyone else get +756 for the bond enthalpy for F-F :colondollar: all I'm seeing is 158, or 504 :/


I got that also, but I'm near certain it's wrong as I didn't practice that topic much prior to the exam and only like 2 other aside from myself and you got that answer.
Original post by ImiT
to get the hydration enthalpy
I halved -1008


I get the same!
does anyone know how many marks the CL2O7 Liquid question was
Original post by khadeejah_1999
does anyone know how many marks the CL2O7 Liquid question was


6 marks.
Is this for OCR A or B?
Original post by giorgianaxo
Is this for OCR A or B?

It’s OCR A

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you