Finally, a teacher that does a decent walk-through of an experiment I can follow and understand each step- cant thank you enough!

Thanks so much Mr Rayner you are a great teacher at school!

Thank you for all the helpful work Rayner-sensei🙏🏾

Written on the table!

You saved my life

Sir your just the best

sir you are such a good teacher i wish u had more alevel videos, were they only for lockdown?

And also double check your total volume.

total volume should be 66 cm3

@humayrakadir5853

2 жыл бұрын

It is its 56 before hydrogen peroxide added and then 10 cm cubed of h202 added as final reactant

@Rainecaine

2 жыл бұрын

I'm gonna stick with 66cm3 tbh, sounds more solid and makes sense in my head

@katheriner6456

Ай бұрын

25cm3 of H2SO4 + 5cm3 of KI + 5cm3 of Na2S2O3 + 1cm3 of starch + 20cm3 of H2O = 56 cm3

Great but shouldn’t you be swirling the test tube with a glass rod.

This is very useful. Is there any literature value for this experiment

so so helpful!!!!!!

would we be able to call this a chain reaction

How did you add up the volume to be 56cm3

subbed

what are the concentrations/molarities of each solutions in this video?

@crrchem4419

Жыл бұрын

0.25 Sulphuric Acid 0.10 Potassium Iodide 0.05 Sodium Thiosulphate 0.10 Hydrogen Peroxide

What kind of starch is this?

You're A Top G

Does this experiment use dilute or conc sulphuric acid, need to know for risk assessment

@crrchem4419

3 жыл бұрын

Dilute, it's only needed to acidify the Peroxide