In choosing a primary standard we generally
choose something that
1. All of these are properties we want in a
primary standard.
2. has a low percent purity.
3. None of these are properties we want in a
primary standard.
4. has several different possible reaction
pathways.
5. is insoluble.
6. has a low molecular weight.
3 answers
Perhaps you need to rephrase this question. As written it makes no sense to me.
you are supposed to chose the answer (1-6) that best finishes the beginning sentence
The answer is 3, none of these describe a primary standard