1
Q
What are acid base indicators
A
Weak acids or bases whose protonated forms have diff colours
2
Q
What is indicator error
A
The difference between the observed colour change endpoint and the true equivalence point
3
Q
Why are NaOH and Kohnot primary standards
A
They have carbonate and absorb water and co2
Their solutions need to be protected from air (to stop co2 absorbtion)
4
Q
Can we store basic solutions in volumetic glass
A
No they attack glass
Chem 311 Midterm 2
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