Write step-by-step process using tables found online for Ka, Kb, Ksp, and thermo

Question

Write step-by-step process using tables found online for Ka, Kb, Ksp, and thermodynamic values. Explain.

Use Table "Equilibrium Constants for Acids and Bases" (Table 16-3. 9^th Edition of your textbook) for values K_a and K_b, Table "Solubility Product Constants for Some Inorganic Compounds at 25 degreeC" (Appendix J) for K_sp values, and Table "Selected Thermodynamic Values" in Appendix L for values deltaf Hdegree, Sdegree and deltaf G degree. Show all your calculations! Calculate the pH of 0.15 M aqueous solution of ammonia.

Explanation / Answer

pOH = 1/2 (pKb -logC)

pOH = 1/2 (9.25 - log(0.15))

pOH = 5.037

pH = 14 - 5.037 = 8.963

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