Equilibrium & Le Chatelier's principle

I’m having some trouble with Le Chatelier’s principle and understanding what affects left and right shift of reverse reactions. Some explanation will be appreciated.

these quick videos summarize well the main things that effect left and right shift



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@sofia22 for you as well!

Pressure - Gas Only (+ = Side with less mole)
Concentration - Shift Opposite
Temperature Increase = Endothermic (Cool Down)
Temperature decrease = Exothermic (Heat up)

Dynamic = closed system
Rate forward - Rate Reverse (Concentration CONSTANT not EQUAL)