Principles of General Chemistry
3rd Edition
ISBN: 9780073402697
Author: SILBERBERG, Martin S.
Publisher: McGraw-Hill College
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Textbook Question
Chapter 19, Problem 19.3P
What is the common–ion effect? How is it related to Le ChĂ¢telier’s principle? Explain with equations that include HF and NaF.
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A buffer solution is prepared by dissolving 1.000 g of sodium acetate (CH,COONa) into 100.00 mL of a 0.100 M solution of acetic acid. Then 1.00 mL of a
1.00 M solution of hydrochloric acid is added to the acetic acid/sodium acetate buffer solution. What is the plf of the solution after adding HCI? Round your
answer to 3 decimal places.
Note: Reference the X, of acids at 25 "C table for additional information.
pH-
O.P
5
X
8
00
dh
4. Calculate the pOH when 35.0 ml of 0.650 M HF is mixed with 15.0 ml of 0.125 M KOH.
K, = 7.1 x 10* (Answer must include completed ICE box)
Consider the buffer system composed of benzoic acid, HC, H,O,, and its conjugate base benzoate, C,H,0;.
HC,H,0, + H,0 = H,0* +C,H,0,
Using Le Châtelier's principle, predict how the concentration of each substance changes by the addition of H,O*.
Does the concentration of HC, H,0, increase or decrease when H,0* is added?
O increase
decrease
Does the concentration of C, H,0, increase or decrease when H,O* is added?
O decrease
O increase
Does the concentration of H,O* change significantly when H,O* is added?
O no
Does the concentration of H,O* change significantly when H,Ot is added?
по
yes
Does the pH change significantly when H,O is added?
no
O yes
Using Le Châtclier's principle, predict how the concentration of cach substance changes by the addition of OH.
Does the concentration of HC,H,O, increase or decrease when OH is added?
increase
O decrease
Does the concentration of C,H,O, increase or decrease when OH" is added?
O decrease
Chapter 19 Solutions
Principles of General Chemistry
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Acid-Base Titration | Acids, Bases & Alkalis | Chemistry | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=yFqx6_Y6c2M;License: Standard YouTube License, CC-BY