1. Calculate the standard entropy change for the following reaction,
2 HgO(s) 2 Hg(l) + O2(g)
given s°[ggO] = 70.3 J/K-mol, 5°I Hg(1)] =76.0 J/K.mol, and 5°[O2(g)] = 205.1 J/K.mol.
For a reaction, AH = +62.9 kJ and AS = +132.9 J/K. At what temperature will AG =0.00kJ?
3. The standard free energy change for the formation of N2H4(l) from elements is +149 kJ/mol at 25 °C. What is
the equilibrium constant for the reaction? (R = 8.314 J/K.mol)
4. Calculate E for the following electrochemical cell at 25 °C
Pt(s) | Sn2*(aq, 0.50 M), 0.50 M) Il T(aq, 0.15 M) | Agl(s) | Ag(s)
given the following standard reduction potentials.
+ e Ag(s) + T(aq) E° = -0.15 V
Sn4' (aq) + 2 e Sn2t(aq) = +0.15 V
5. If AG for the following reaction is -324 kJ, calculate
Cr2O7 (aq) + 2 Fe(s) + 14 H^(aq) (aq) + + 7H2O(l)
These solutions may offer step-by-step problem-solving explanations or good writing examples that include modern styles of formatting and construction
of bibliographies out of text citations and references. Students may use these solutions for personal skill-building and practice.
Unethical use is strictly forbidden.