Equation for the formation of a magnesium ion

Mg --> Mg*2+ + 2e*-

2+ and - are the charges of magnesium and electrons respectively if you wonder.

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.

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