What is the gEq weight of an acid?
a. Amount of the acid containing 1 mol of replaceable H+ ions.
b. Amount of the acid containing 1 mol of replaceable OH? ions.
c. Gram atomic weight of the acid times its valence.
d. Milligrams of acid per deciliter (dl) of normal solution.
ANS: A
The gram equivalent weight of an acid may be calculated by dividing its gram formula weight by the number of hydrogen atoms in its formula, as shown in the following reaction:
The single H+ of hydrochloric acid (HCl) is replaced by Na+. One mole of HCl has 1 mol of re-placeable hydrogen. By definition, the gEq of HCl must be the same as its gram formula weight, or 36.5 g.
You might also like to view...
High-expansion foam is typically used for:
A. wildland and brush fires. B. rolling on to liquid fuel fires. C. suppressing vapors from hazardous materials spills. D. confined spaces such as mines and shipboard compartments.
The height of the surface of the water source determines the amount of __________ in the system
a. Water pressure b. Direct pressure c. Gravity pressure d. Head pressure
Extracorporeal refers to:
a. substances administered via the veins. b. infusions and injections. c. methodologies which attempt to remediate or cure a disorder or disease. d. procedures or processes that take place outside the body.
Which type of research, for example, considers the effect of intraoral sodium bicarbonate rinses on the periodontal ligament of laboratory rats?
A) Case study B) Case control C) Experimental D) Correlational E) None of the above