Oxidation Number 1

[@W_B-07-j1f]

Thank you. Our teacher wasn't in today and you have just helped me.

[@jacksohal7823]

Top videos , you make it very clear and easy to understand! Just wish i found this channel earlier haha keep it up mate

[@simbabunny9710]

Thank you so much for these videos, you are saving my grade :) . Please come to my school and be my chemistry teacher !!!!

[@prepzi12]

I have a mock tomorrow and Watching your videos really help as you make it much simpler to understand. thank you for uploading them :)

[@MaChemGuy]

Good luck!!

[@rabzali4335]

You are fantastic. I have my real exam in 2 weeks so I discovered you a bit late hahaha but still your videos were of great help!! Awesome sir. Thank you so much for these!!!

[@cerridwencottage4778]

Thank you, starting A levels in September and this has been so clear and helpful :)

[@mariarak8328]

Why in hydrogen peroxide the oxygen has a charge of 1-?I had looked at the dot and cross diagram but I don't quite understand an explanation​ would be much appreciated.

[@ayshamehmood4832]

hi, say you had SO42-, is the exam likely to ask us to work out the O.N of oxygen? i mean yes I know oxygen is -2 but if they asked me to work out oxygen, I would have thought sulphur was -2 but actually it is +6. thank you! your videos are a God send!!!!

[@MaChemGuy]

Aysha Mehmood They wouldn't ask about oxygen in this case as it's too easy. Glad your finding them helpful:)

[@ayshamehmood4832]

oh okay thank you and yes I am finding the videos extremely useful. i shall tell my teacher about them and inform my classmates about your channel. I'm sure a couple of them would check it out and find it very useful as well!;))😄😁😊🤗

[@MaChemGuy]

Aysha Mehmood That's very kind of you. Thank you!

[@ayshamehmood4832]

you're very welcome;))

[@chronophobia7117]

Oxidation numbers and oxidation states are the same thing yes?

[@RuhabDabeer]

I HEART OXIDATION NUMBERS ME!!!!!! I also love them

[@ummewaseem5983]

Is the O.S of oxygen in h2o2 -1 because an oxygen atom uses one electron to bond with 1 hydrogen and one electron to bond with another oxygen atom?

[@MaChemGuy]

Correct

[@aaronali6713]

hiya I'm trying to do a question. its asking me to use oxi numbers to find out if fe has be oxidised or reduced. the equation is: 2Fe3+ + 2I- ==> 2Fe2+ + I2 In the book it says the fe goes from +3 to a -2 oxi number. But I thought it would've been +2. any help explaining????

[@MaChemGuy]

The book's wrong, you're right

[@aaronali6713]

+MaChemGuy so would the answer be that: fe has been reduced as it's gone from +3 to +2. also thanks for replying so quickly.

[@johnmichaeldagohoy8763]

Thank You

[@MaChemGuy]

You're welcome

[@zannatul23]

you'r videos are good! soon you'll blow

[@MaChemGuy]

zannatul Zan I'm assuming that's good?

[@zannatul23]

LOOL yeah

[@zannatul23]

blow means you will become known its a collequal term that we use in East London

[@MaChemGuy]

zannatul Zan Wait till I tell my kids that. You made my year, all 7 days of it

[@iantheaker2687]

You need to be careful with your definition of oxidation number for organic molecules - the carbon in methanal (HCHO) is certainly using 4 electrons to bond covalently to another element but it has an oxidation number of 0 here !

[@MaChemGuy]

Thanks for the comment. Not the sort of thing tested at A level, phew!