Author Question: Which of the following are true concerning pH? 1. A blood pH = 7.50 is alkaline. 2. A blood pH 7.40 ... (Read 29 times)

azncindy619 · **on:** Jul 16, 2018

Which of the following are true concerning pH? 1. A blood pH = 7.50 is alkaline. 2. A blood pH <7.40 is alkaline. 3. A blood pH >7.40 is acidotic. 4. A blood pH = 7.30 is acidotic.

a. 1 and 2 c. 3 and 4
b. 2 and 3 d. 1 and 4

Question 2

The reference half-cell of a pH analyzer is composed of:

a. silver anode. c. silversilver chlo-ride.
b. platinum cathode. d. mercurymercurous chloride.

mjenn52 · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: D
A blood pH that is greater than 7.40 is alkalotic. Therefore, a pH of 7.50 is alkalotic. A blood pH that is less than 7.40 is acidotic. Therefore, a pH of 7.30 is acidotic.

Answer to Question 2

ANS: D
A pH electrode's second cell is the reference cell. This reference half-cell is composed of mercu-rymercurous chloride (Hg/Hg2Cl2), which is immersed in a solution of saturated potassium chloride (KCl). Mercurous chloride is also known as calomel.