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Friday, October 12, 2007

Chemistry Question - Redox

Halo, Try this one...

Q) A drop of solution S turns acidified orange potassium dichromate (VI) to green chromium (III) ions. What must solution S contain?

A) An acid
B) An oxidizing agent
C) A reducing agent
D) A substance that can be oxidized

Come on students....

Rgds
Sean
SimpleChemConcepts

5 comments:

Anonymous said...

Is it C?

zhengning said...

Orange potassium dichromate (VI) is reduced to green chromium (III) ions, so it's an oxidizing agent.

Hence, the solution must be a reducing agent...

C?

Anonymous said...

I think the answer is C.. by the way, can I have the link that was removed in the comments in the post on Fats and Terylene?

lijun(: said...

i think its C too.

S reduces the orange potassium dichromate (VI) to green potassium dichromate (III),
hence, S must be a reducing agent.

Sean Chua said...

Well Done both.

Answers is indeed C. Some students tends to have problems when it comes to Reducing and Oxidizing Agents.