Q4 Which solution(s) showed the greatest change in pH? Why? Q5 Which solutions(s) showed little or no change in pH? Why? Q6 Normally, the pH of the human body is fixed in a very narrow range between 7.35 and 7.45. A patient with an acidotic blood pH of 7.3 may be treated with an alkali such as sodium hydrogen carbonate. Why would this treatment raise the pH of the blood?

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter15: Acid–base Equilibria
Section: Chapter Questions
Problem 95AP
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C. Effect of Buffers on pH
C.1 Effect of adding acid
Solution
1. Initial
2. pH after 3. pH after
5 drops
of HCI
4. рH
change
5. Buffer
pH
10 drops
of HCI
yes or no?
H20
1,3
0.1 M NaCl
1.4
High pH
buffer
Low pH
buffer
3,8
3.7
013
C.2 Effect of adding base
Solution
1. Initial
pH
2. pH after
5 drops
of NaOH
3. pH after
10 drops
of NaOH
5. Buffer yes
4. pH
change
or no?
H20
6,5
13
6.4
/2,7
12/6
Aro
0.1 M NaCl
13
6.8
High pH
buffer
Low pH
buffer
4
4,3
4,4
0,4
Questions and Problems
Q4 Which solution(s) showed the greatest change in pH? Why?
Q5 Which solutions(s) showed little or no change in pH? Why?
Q6 Normally, the pH of the human body is fixed in a very narrow range between 7.35
and 7.45. A patient with an acidotic blood pH of 7.3 may be treated with an alkali
such as sodium hydrogen carbonate. Why would this treatment raise the pH of the
blood?
need help with Q4 / Q5 / Q6
Transcribed Image Text:C. Effect of Buffers on pH C.1 Effect of adding acid Solution 1. Initial 2. pH after 3. pH after 5 drops of HCI 4. рH change 5. Buffer pH 10 drops of HCI yes or no? H20 1,3 0.1 M NaCl 1.4 High pH buffer Low pH buffer 3,8 3.7 013 C.2 Effect of adding base Solution 1. Initial pH 2. pH after 5 drops of NaOH 3. pH after 10 drops of NaOH 5. Buffer yes 4. pH change or no? H20 6,5 13 6.4 /2,7 12/6 Aro 0.1 M NaCl 13 6.8 High pH buffer Low pH buffer 4 4,3 4,4 0,4 Questions and Problems Q4 Which solution(s) showed the greatest change in pH? Why? Q5 Which solutions(s) showed little or no change in pH? Why? Q6 Normally, the pH of the human body is fixed in a very narrow range between 7.35 and 7.45. A patient with an acidotic blood pH of 7.3 may be treated with an alkali such as sodium hydrogen carbonate. Why would this treatment raise the pH of the blood? need help with Q4 / Q5 / Q6
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