Electrochemistry

Electrochemistry_ Galvanic Cell with Cr (III) _ Cr (II) and Hydrogen Half Cells

This animated video takes an in-depth look at the mechanism for the reaction between propene and hydrogen bromide. This is an addition reaction to an asymmetric alkene, so there are two possible alkyl halide products. Markovnikov's rule and the stability of the primary and secondary carbocation intermediates are discussed.

Thanks for visiting. This animated video takes an in-depth look at the mechanism for the reaction between ethene and bromine.

This video shows you how to separate reaction into half reactions, look up the reduction potentials to find the amount of voltage occurring with reduction and how to combine the half reactions into a total voltage.

Copper Sulphate + Magnesium = Magnesium Sulphate + Copper. We don't see much of the red-brown colour of copper forming. The explanation only comes in Year 14 chemistry. When copper is formed we then have both copper and iron metals in the salt solution. 2 metals in a salt solution produces what we call an electrochemical cell and various side reactions that will result in unexpected products - these may include gases and oxides.

This video covers how the transfer of electrical voltage is related to free energy and how that is related to equilibrium.

Everything you need to know about Electrochemistry. Electrochemistry is the relationship between electricity and chemical reactions. There are two ways that electricity and chemical reactions interact: certain chemical reactions can create electricity, and electricity can force certain chemical reactions to happen that wouldn't happen otherwise. We'll look at two very common examples in electrochemistry. We'll see how a galvanic or voltaic cell uses a chemical reaction to create electricity, and we'll see how electrolysis uses electricity to cause water to decompose into hydrogen and oxygen gas. We'll also look at the list of Standard Reduction Potentials, to figure out what chemical reactions will happen on their own (are spontaneous) are can create electricity, and which will not happen on their own (are not spontaneous) and require electricity to happen.

Iron Sulphate + Zinc = Zinc Sulphate + Iron. We don't see much of the red-brown colour of copper forming. The explanation only comes in Year 14 chemistry. When copper is formed we then have both copper and iron metals in the salt solution. 2 metals in a salt solution produces what we call an electrochemical cell and various side reactions that will result in unexpected products - these may include gases and oxides.

Here we cover how to solve for voltage under non-standard conditions using the Nernst equation. This video builds on the equation for part 5 so you will need to watch these two in tandem to get this.