Name PRELIMINARY EXERCISES: Locker mber 230 Experiment 17 Aclds, Bases, pH, Hydr
ID: 586775 • Letter: N
Question
Name PRELIMINARY EXERCISES: Locker mber 230 Experiment 17 Aclds, Bases, pH, Hydrolysis, and Buffters What property of a solution is described by its pit . A solution has a pH of 8.7. a. What is the pOH of this solution? b. Is the solution acidic, basic, or neutral? Solution A has a hydronium ion concentration of 3.8 x 10 M. Solation B basa 2. 3. hydronium ion concentration of 2.5 x 10-4 M. a. Which solution has the larger hydronium ion concentration? b. Which solution has the greater pH? 4. Estimate the pH of an aqueous solution of each of the following compounds by indicating whether the pH is greater than 7 (>7),less than 7 (Explanation / Answer
1. property described by solution by pH
pH of solution described solution is acidic, Besic or neutral
pH = 1 - 7 it is Acidic
pH = 7 it is neutral
pH = 7 - 14 it is Besic
2.
a) pOH = 14 - pH = 14 - 8.7 = 5.3
b) it is Besic because
pH = 1 - 7 it is Acidic
pH = 7 it is neutral
pH = 7 - 14 it is Besic
3)
a) 2.5 X 10-4 solution have higher hydronium ion concentration
b) 3.8 X10-8 solution have larger value of pH
Because pH = -log[H3O+ ] = -log(2.5 X 10-4 ) = 3.6
-log(3.8 X10-8 ) = 7.4
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