Writing an Equilibrium Expression (Mass Action Equation)

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This short video shows you how to write an equilibrium expression. I discuss what the constant is used for. I discuss which phases to include in this setup. I also go over a examples.

Example reactions:
3 O2(g) ↔ 2 O3(g)
N2(g) + 3 H2(g) ↔ 2 NH3(g)
Cu(s) +2Ag+(aq) ↔ Cu2+(aq) +2Ag(s)
CaCO3(s) ↔ CaO(s) + O2(g)
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Thank you so much!  I have an engineering chemistry exam in a few hours that I've been cramming for and instead of trying to learn this just from the book your youtube helped so much!  I can't explain how much help you just were!  Thank you so much!!!

george-wmgw
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Thank you! If only my textbooks and Prof. were this concise...

bhnjus
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Thanks for this man, got a test tomorrow in IB Chem III HL and this shit hasn't made much sense to me. Peace to you.

Rigguns