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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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    https://brainmass.com/chemistry/energetics-and-thermodynamics/standard-free-energy-change-atomic-mass-ph-molality-26662

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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 ...

    Solution Summary

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

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