All Questions
6
questions
2
votes
1
answer
86
views
Are all salts completely dissociated in solution when put in smaller amounts than their molar solubility?
From what I understand, the solubility is given in terms of molar solubility (or $\pu{K_{sp}}$), from which it can be easily calculated). Indeed, the saturation point represents the maximum amount of ...
- 67
4
votes
4
answers
244
views
Determining the concentration of a very small sample of sulfuric acid
How can we determine the concentration of sulfuric acid in a very small sample?
We are working on a “mechanical” process that transports a very small amount of sulfuric acid to an instrument and we ...
- 41
0
votes
0
answers
138
views
Problem in the calculation of ionic strength of a solution
Recently I've been trying to answer the question 10-13 (c) of 9th edition of Fundamentals of Analytical Chemistry of Skoog et al. Comparing my answers with the student manual , I realized that my ...
- 177
1
vote
0
answers
117
views
Can analytical precision be finer than a lower detection limit?
Can analytical precision be finer than a lower detection limit?
For example, if the lower detection limit of an analytical method is reported as 0.010 ppm. Is it possible to have an analytical ...
1
vote
1
answer
371
views
Creating 1L of 1000 ppb stock solution of Pb2+
I’m testing on samples that require a concentration of 1000 ppb (or 1 mg/L) of Pb 2+. My first thought was to simply dissolve 1 mg of Lead nitrate in 1 L of deionized distilled water to create 1 L of ...
- 467
3
votes
1
answer
160
views
How do I measure out these salts using the proper method?
I'm planning on preparing a water solution using the following salts of reagent grade with approximately these concentrations:
\begin{array}{lr}
\ce{CaCl2} & \pu{10 mg/L}\\
\ce{Na2SO4} & \...
- 49