Godsend

Hi sir could you do a quick explanation on the effect of increasing conc on the cell potential as I didn't quite get q1 a ii

At 7:12 will I get the marks if I balanced the equations because each half cell has a different number of electrons? I wrote down: 2Mn^2+, 8H2O, 10Fe^3+ and 5Br2 Basically I imaged that all three half cells were redoxing together so I had to make sure the electrons matched from the data in the question. And for the last question would hydrogen being more volatile/explosive because it’s a gas compared to Methanol being a liquid be a valid answer? Thanks

very useful thank you!

Really well explained sir, thank you !

@MaChemGuy

3 жыл бұрын

Most welcome!

why are you using a silver electrode for the silver solution but a platinum electrode for the iron solution

@MaChemGuy

2 жыл бұрын

The two oxidation states for the iron are the two ions in the solution

Hi there, for question 1a i, I was just wondering if the iron half cell should be drawn on the left because it has a more negative (less positive) electrode potential compared to the silver half cell?

@MaChemGuy

3 жыл бұрын

OCR does not insist on this so I don’t bother

@angelahalton8827

3 жыл бұрын

@@MaChemGuy ah ok thank you!

@MaChemGuy

3 жыл бұрын

@@angelahalton8827 You are right btw :)

Hi my favourite geordie teacher. Thanks for the video, I have a question regarding 3:56 . Could you tell me the specific rule please as to whats making the reaction go in that direction, in terms of le chateliers. Thanks again, Daniel

@TheRealDanielTV

Жыл бұрын

Hi does anyone know?

@MaChemGuy

Жыл бұрын

If you increase the concentration of any reactant, an equilibrium will shift in the forwards direction to minimise the change. Because of this, the standard electrode potential increases

Why does the voltage become more positive when the Ag+ concentration is increased?

@MaChemGuy

Жыл бұрын

Equilibrium shifts to the right