Question

What are ,
1) Primary standard solutions
2) Secondary standard solutions
3) Tertiary standard solutions ?????

@photon336

Answer 1

Interesting, I've never heard of this definition before

Answer 2

1. primary standard = substance of high purity dissolved in a known volume of solution.

Answer 3

I guess it seems like a reference

Answer 4

Yeah this is regarding analytical chemistry, all about solutions used during titrations !

Answer 5

I kinda understood what a primary standard is , but don't understand the secondary one and the tertiary ones

Answer 6

"The term secondary standard can also be applied to a substance whose active agent contents have been found by comparison against a primary standard. Concentrations of standard solutions may be expressed in kmol m −3, mol dm −3, or in terms more closely related to those used in specific titrations (as titres)."

Answer 7

so I guess primary standard is a reference you use to help find the concentration of a secondary standard.

Answer 8

Primary standards of what I learned from the note was something that is going with a stoichiometric ratio 1:1

Answer 9

ok here I found a better definition

"Standards are materials containing a precisely known concentration of a substance for use in quantitative analysis." we know this:

"A standard provides a reference that can be used to determine unknown concentrations or to calibrate analytical instruments."

"A secondary standard is a standard that is prepared in the laboratory for a specific analysis. It is usually standardized against a primary standard"

Answer 10

so In English

Answer 11

It seems that we use a primary standard as a known concentration, we use to help figure out unknown concentrations.

the secondary standard is the concentration of something that we are analyzing in a lab
and it is "standardized against the primary standard"

Answer 12

3) Tertiary standard solutions i have no idea I couldn't find anything on those

Answer 13

oh thank you soo much that was easier to understand !!!!! Phew thanks a lot !

Answer 14

I read a lot of articles didn't get it though !!!!!

Answer 15

yeah, I always try to put stuff into my own words

Answer 16

Oh well thanks a bunch again :)

Answer 17

no problem