OCR A 5.2.2 Enthalpy and Entropy REVISION

[@Ts-gc3fh]

I LOVE YOU i don’t how i would have passed chem this year without u

[@cyberblader_2549]

Thank you so much :) Your revision videos are so good and really helped me in my chem exam!

[@aosman1838]

on the example when calculating enthalpy change at 17:55, you didn't change the temperature from degrees to kelvin.

[@skittlesboy8033]

It’s cus he’s working out change in temperature so it doesn’t matter if it’s degrees or Kelvin u get the same thing

[@mels4371]

when calculating change in temp it doesnt matter i its in degrees or kelvin cos the change would still be the same

[@shyamkanjee6409]

Such strange times would’ve been hard at work, but no exams. Class of 2020 is a shambles. Still watched the video though 👍🏽

[@AlleryChemistry]

Thanks for watching! It is strange times we live in. We'll get through it though.

[@shyamkanjee6409]

@@AlleryChemistry I want to also personally thank you. You've helped me so much during A-levels. I'll give you an update on what grade I get in August!

[@AlleryChemistry]

You're very welcome!

[@jds5142]

@@shyamkanjee6409 What did you get?

[@Haris-qo1hx]

@@jds5142he flopped

[@zzey]

I thought entropy was measured in Jmol-1 and that all the other values are meant to measured in Jkmol-1 so you /1000 entropy to convert it to jkmol-1

[@rkiveee]

At 14:55 how can you predict if a reaction is endothermic or exothermic? or will we get information about it in the question?

[@spp5228]

In OCR A chemistry do we need to know how to graph entropy?

[@SITAE.]

Thank you for this informative video sir

[@AlleryChemistry]

Most welcome

[@alyssaketibuah761]

Love your videos !! Were you not meant to convert the temperature of the 34 to K ?

[@AlleryChemistry]

No need, as it is a temperature change, then the value is the same in K as it is in degrees Celsius. If you are stating a temperature and not a change, then you do need that converted to Kelvin. 👍

[@neyney_baneyney]

in 22:22, why was the q turned into a minus?

[@paarthningoo1155]

because it was an exothermic reaction

[@LeahRebecca]

really appreciate your videos!!

[@AlleryChemistry]

Glad you like them!

[@exrth9209]

ayo you single?

[@gg-dg6rk]

I’ve got a test in an hour and I’m so cooked

[@omshivakotkar8117]

Thanks sir

[@exrth9209]

Amzaaaaaa bet youre reading this