Buy Acids Bases and Buffers Discussion Questions

Buy Acids Bases and Buffers Discussion Questions
Order 59803132
Buy Acids Bases and Buffers Discussion Questions
1. Which of the following statements is CORRECT?
A. An acid is an electron donor and a base is an electron acceptor.
B. An acidic solution has a pH less than 7 and a basic solution has a pH greater
than 7.
C. Neutralization of a strong acid by a strong base gives only water.
D. The pH of saliva is normally in the range of 8.5–9.5
2. Which statement about buffers below is most correct?
4.5 Acids, Bases and Buffers
80
A. A buffer is any acid and base which together control the concentration of
pH in the blood.
B. A buffer is the solution which allows CO2 to be lost from the lungs in order
to control the pH of the lungs.
C. A buffer is a weak base and its acid salt or a weak acid and its basic salt. The
ratio of the two components helps maintain blood pH levels.
D. A buffer is a mixture of two acids which together help to maintain blood pH
 
Buy Acids Bases and Buffers Discussion Questions
3. Which of the following statements is FALSE?
A. An acid is a proton donor and a base is a proton acceptor.
B. An acidic solution has a pH greater than 7 and a basic solution has a pH less
than 7.
C. Neutralization of an acid by a base gives a solution of salt in water.
D. The pH of the stomach is normally in the range of 1.6–1.8
 
4. Neutralization of an acid by a base can be represented by the following
equation:
H O3 2 OH 2H O − →
This means that the pH of the solution after the neutralization is approximately:
A. 6
B. 7
C. 8
D. 9
5. A buffer solution consisting of citric acid and citrate in a ratio of 5:1 maintains
the pH at 7.4. What would be the ratio of the two components if the pH were to
become 6.4
A. 6:1
B. 10:1
C. 50:1
D. 1:10
6. Which of the following statements is closest to a correct definition of an acid?
A. a substance that ionises in a solution to produce hydronium and hydroxide
ions.
B. a substance that reacts with water to produce hydroxide ions.
C. a substance that dissociates in water to produce a solution with pH greater
than 7.0.
D. a substance that reacts partly with water to produce a low concentration of
hydronium ions.
7. The pH of a buffered solution depends on:
A. the ratio of the components of the buffer solution.
B. the amount of acid added to the buffer solution.
C. the amount of base added to the buffer solution.
D. the amount of acid and of base added to the solution.
8. The long term acid-base balance in the body is controlled by
A. the phosphate and carbonic acid/bicarbonate buffers in the blood
B. the kidneys and the lungs
C. the phosphate, carbonic acid/bicarbonate, and protein buffers in the blood
and cells.
D. the kidneys
9. You have a bottle of a strong acid and you add 100 ml of this to one litre of
water. What would the pH of this final solution most likely be?
A. pH=1
B. pH=5
C. pH=7
D. pH=11
10. What is the approximate range of pH of gastric juice in the stomach?
A. 1.6–1.8
B. 6.2–7.4
4.5 Acids, Bases and Buffers
82
C. 7.3–7.5
D. 7.8–8.6
Having a hard time figuring out how to do your assignment?
Ask our experts for help and get it done in no time!