Which reaction occurs at the platinum cathode of the Clark electrode?
a. CO2 + H2O ? H2CO3 ? H+ + HCO3–
b. AgCl + KCl ? Ag2 + Cl2 + K
c. O2 + 2H2O + 4e– ? 4OH–
d. 4Ag ? 4Ag+ + 4e–
ANS: C
Oxygen from the blood sample diffuses across the semipermeable plastic membrane into the KCl solution and reacts with the platinum cathode, altering the conductivity of the electrolyte solu-tion. The platinum cathode donates electrons, which reduce oxygen to produce hydroxyl ions.
You might also like to view...
The calculation made by subtracting the age at death from 65 produces what is called ________________________ ________________________ ________________________ ________________________
Fill in the blank(s) with correct word
Which types of plastics are those that are hardened into a permanent shape in the manufacturing process and are not subject to softening when reheated?
A. Thermoresins B. Thermosetting C. Thermoplastics D. Thermopolymers
When the covered beneficiary is responsible for a portion of the total healthcare costs, this is known as cost __________
Fill in the blank with correct word.
A(n) ____________________ is a person who is working against an individual or party; an opponent, not an ally
a. conservator b. attorney c. adversary d. guardian ad litem