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Hi Mr Burrell 😂😁

Thx. Doing unit 2 in 2025.

Thx

#21 is C as seen in the calculation NOT B.

Its always hard finding unit 2 past paper solutions, appriciate the playlist

Sir there was a mistake the nitrogen -hydrgen bond would absorb more IR radiation

#25 is B not A since it says ENDOTHERMIC not exothermic

Sir at 1:35 would Z be nitrates,Y nitrites and X-nitric acid?

For number 14 don't halogenalkanes go through electrophilic substitution

Sir for number 12 how did you determine the repeat unit

i think 41 should be D and 39 and 40 need to switch around

Sir the chem unit 1 paper 1 was good, alot of things you showed us came back🎉

Wouldn't 2 be A and 21 be D?

This morning is chem U1 sir, thank you for all the help so far ‼️🙂‍↕️ I'll let you know how it goes.

Correction for 38 C it should be D. Let me explain all 3 will oxidise the thiosulphate ions to tetrathionate but chlorine and bromine being stronger ozidising agents will further oxidise it to suphate ions.

So when they have the option as 4s and 4d we go with A as the best option but if C is 4s and 3d that is the better option. All the ones where I choose A 4s only is when C says 4s and 4d

Question 41 on the other videos you have the answer as A?? I’m confused

Since it says NOT true thats the best answer in my estimation

Remember in dynamic equilibrium reaction can be reactant favoured or product favoured. Example strong acids are product favoured so equilibrium can be achieved but the conc of product will be greater than conc of reactants ie k>1 but vice versa for weak acids which will be reactant favoured therefore will have a higher conc of reactant and a lower concentration of product when equilibrium is established ie k<1

#32 is D it's a mistake ....all the other papers have the correct answer. Thanks for bringing it to my attention.

Isn't 32 D?

Could someone please explain why the answer to #19 was B?

Sir won't the oxidation occur at the zi cathode?

0:48 what's the difference between A and C sir

Remember you can also zoom on your phone or tablets. You can also watch on a bigger screen like a computer or a smart tv.

Always remember if the video is blurry you need to go into settings then quality then advance then click 1080p and the video will be sharp and clear

Sir it's very blurry

Will reply when i get home

0:48 when i plug in the numbers to the p2=p1v1/v2 i.e p2=0.49(50)/20 im not getting any of the answers

Why is the ratio at 1:18 2to2 instead of 1 to 2

Link to Part c th-cam.com/video/IgG-T_qlwyA/w-d-xo.html

Thank you very much Sir. This was extremely helpful!

Sir still doing the unit 2 paper 2 2010-2015 past paper?

Where is question c?

Sir why does the size of the atom matter when its giving out H+ ions

i am sure this guy is saving most of Jamaica's add chem students right now. tomorrow will be mad crazy.

thank you!

Love what you're doing Sir. Can you please make a video from the Chemistry Unit 2 2010-2015 Paper 2 past papers in one single video before Thursday? It would be greatly appreciated. 🙏

Sir could you do the 2018 unit 1 paper please.

Your welcome 👍

Rem the rate is dependent on reactant concentrations but we dont raise to the mole/stoichiometric ratio we raise to the order of the reactant concentrations which can only be obtained from experimental data so the rate law is equal to rate contstant k times the conc of [S2082-] raised to an unknown power eg a or x times the concentration of [I] raised to some unknown power b or y. Then we use the data for the table to calculate the powers a and b or x and y to obtain the order with respect to each reactant concentration.

grateful for this so much, teachers dont do this...

Great video! Very useful‼️

For (d) (ii) where you calculated the cube root i got 0.0035 and not 0.011

Module 2 please

Thank you 🙏

Sir can you explain why for the taste law question you didn't put I to the 3rd layer since the whole number is 3. And can you say why you didn't raise any by a power

i seriously wished that you had explain how you got the oxidation numbers more so that i could understand. it's so confusing.

The explanation for the answer i agree with but not the labels on the arrows

How come br2 goes through reduction go br- and oxidation to bro-? Isn't reduction the gain of elections 11:35