Coffee Bean

No, there is no report to do. Just a presentation to help the class understand redox better. Hmm.. I can't remember much the observations as there are 6 test tubes. What do I remember is when heating zinc in iron(III) chloride, the reaction was very vigorous whoaa...

Thanks! I figured out the X will be manganese ^^ The observations I've been asking are simple ones... Let's say, blue precipitate formed, yellow solution turned to blue and so on...

Yes, I do know how to set up two half equations and combining them. My lab teacher asked me to add sulphuric acid into potassium permanganate to acidify it.

Hello! I'm a high school boy and redox reactions are confusing me... My lab teacher asked me to do those redox experiments and now I lost my observations paper! What a douche bag I am! How can I present it to class next Sunday :-/ So, can you guys help me? The procedure of the experiments are: Changing iron(II) to iron(III) 1. Pour 4cm3 of iron(II) sulphate, FeSO4 into a test tube 2. Add potassium manganate(VII), KMnO4 until yellow solution is obtained. i. My lab teacher said this need to be acidified, but the book didn't say so, can anyone tell me why? However, I used acidified one when doing the experiment. ii. Can you help me with the equations here? 3. Divide the solution equally into 3 separate test tube. 4. Test with reagents: Sodium hydroxide, NaOH ; Potassium hexacyanoferrate(II), K4Fe(CN)6 and Potassium thiocyanate, KSCN i. Can you help me with the observations and equations here for each reaction with reagents? Changing iron(III) to iron(II) 1. Pour 4cm3 of iron(III) chloride, FeCl3 into a boiling tube. 2. Add half spatula of Zinc powder and warm the solution gently. i. Can you tell me why this need to be done? ii. Can you tell me the equations here? 3. Cool the mixture and filter it. 4. Divide the filtrate equally to 3 separate test tube. 5. Test with reagents: Sodium hydroxide, NaOH ; Potassium hexacyanoferrate(II), K4Fe(CN)6 and Potassium hexacyanoferrate(III), K3Fe(CN)6 i. Can you help me with the observations and equations here for each reaction with reagents? I only have couple of days more to do this, please do help me... Ps: Sorry if I posted this in wrong section...