thank you for your replies, i know the answer is A but i am still unsure as to how to properly work it out,how do you check oxidation states? and what type of reactions are the other 3?
Hi,
I'm interested in your response.
I recommend the chemguide a lot because I feel it explains topics very well - as does Borek's very detailed Chem Buddy.
In the 23 minutes between me posting the URL and you posting a reply, was
none of the information in chemguide any help to you understanding the meaning of redox or how to apply it to your question? Do you think any of the information provided is or might be relevant to the equations you have written? Then we can work from there
Clive
Separately:
I feel until the concept of oxidation and reduction is understood in terms of electron exchange, there is no point talking about oxidation numbers. However, to tackle the question you do need the concept of oxidation numbers but its not the first step.