Answer:
The correct answer to the question are
C. Not Hygroscopic
F. Medium to High Molecular Weight
J. Stable
Step-by-step explanation:
In metrology, a primary standard s one that is adequately accurate whereby it is not gauged by other standards. Primary standards are specified in units such as the mass or length or time.
In titration a primary standard is used to determine the concentration of a substance. Here small amounts of a reagent and a solution are combined to cause a chemical reaction to occur. The occurrence of the reaction is evidence of the correct concentration of the solution. Standard solutions, solutions with a definite concentration are made from primary standards
The following are characteristics of a good primary standard
- High weight in comparison to other reagents