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Standard Free Energy Change, Atomic Mass, pH, Molality

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8 general chemistry questions involving: standard voltage/free energy exchange, atomic number/mass, pH, balancing equations, molality/molarity and more.

Example: When the eqation for the half reaction above is balanced, what is the ratio of the coefficients OH- : Cr02-
(a) 1 : 1
(b) 2 : 1
(c) 3 : 1
(d) 4 : 1
(e) 5 : 1

*(Please see attachment for complete equations and problems)

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Solution Summary

The expert examines the standard free energy change, atomic mass, pH and molarity of a function.

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20. (A) Copper and Silver both have positive electrode potentials (as listed in literature), therefore, Delta E will be positive. Gibbs free energy is given as:

Because E is positive, G should be negative.

21. New Atomic Number = 84 - 2 + 1 + 1 - 2 = 82
New Atomic Mass ...

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