32. Given the following half reactions and using Le Chatelier's principle, which of the followin

First, we need to understand that a reducing agent is a substance that loses electrons in a redo

32. Given the following half reactions and using Le...

32. Given the following half reactions and using Le Chatelier's principle, which of the following become stronger reducing agents as the solution becomes more basic? I. Cl2 II. MnO4^2- III. Al IV. H2S E0 (volts) HClO + H+ + e- <=> 1/2 Cl2 (g) + H2O 1.630 Al(OH)4^- + 3 e- <=> Al(s) + 4OH- -2.328 S(s) + 2 H+ + 2 e- <=> H2S (aq) 0.144 MnO4^- + e- <=> MnO4^2- 0.56 A. I, II, III, and IV B. I, and IV only C. I, III, and IV D. III only

Transcript

00:01 Says based on le chatelier's principle which ones of these are going to become stronger as the solution becomes more basic.

00:07 More basic is going to mean less h+.

00:11 So that's being removed from each of your systems.

00:14 So if you consider your first system as the hclo plus the h plus plus the electron going to the half cl2 gas and the water, that basically we're saying that this h term here is going down.

00:33 It's decreasing.

00:34 And so if it's decreasing what's going to happen is according to le chatelier's principle the equation will shift towards that decreasing amount in order to try to reduce that stress.

00:46 So when it shifts backward that's going to reduce your potential.

00:50 So we'll have less potential because it's going backwards.

00:58 So we were trying to find out which ones would become stronger reducing agents.

01:03 Now reducing agents pair up with oxidized which means they lose electrons.

01:09 So when i'm looking at this chlorine and i see that it's shifting more towards the left and it's losing more electrons i would say it's becoming a better reducing agent.

01:18 So the one we're going to say yes that one did.

01:21 Alright.

01:22 Next one.

01:23 As it becomes more basic since you've got four hydroxides over here on the right side of the equation it's going to shift some more forward.

01:32 As it shifts more forward what's going to happen is your al solid is going to increase.

01:40 So it's not going to be getting rid of those three electrons as well...

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