All Questions
12
questions
2
votes
1
answer
103
views
Equilibrium Solubility of CO2 in Aqueous Solution and its Dependence on H3O+ Concentration
The equilibrium solubility of $\ce{CO2}$ in an aqueous solution is given by three chemical reactions:
$$
\begin{align}
\ce{CO2(g) &<=> CO2(aq)}\label{rxn:R1}\tag{R1}\\
\ce{CO2(aq) + H2O &...
0
votes
0
answers
84
views
Does temperature affect ionic strength?
Hello I apologize if this is a dumb question but if I have a phosphate buffer made up of Na2HPO4 and NaH2PO4 and I gradually increase the temperature (lets say 10,20,30,40,50) what would happen to the ...
- 11
5
votes
1
answer
643
views
Why do my equilibrium calculations on this HF/NH4OH buffer system not match those in literature?
I've been trying to reproduce Figure 2 from this research paper (full text available).
The Problem
However I can't seem to get the same values as in the paper. I did the math both by hand and with ...
- 161
2
votes
1
answer
660
views
Predicting Ka/Kb values using values for solubility in water
Given that $K_\mathrm{a}$ values are determined by the position of equilibrium for a species such as $\ce{HCl}$ where $K_\mathrm{a} = \ce{\frac{{[H^{+}]}{[Cl^{-}]}}{[HCl]}}$, I was wondering whether ...
- 79
0
votes
0
answers
163
views
Formulation solubility?
Creatine is a popular sports/fitness supplement, generally sold as a powder to be mixed with water (usually like 5-10g creatine per serving). However, it is not very "soluble" in water -- barely 13.3g/...
- 1,556
2
votes
1
answer
3k
views
Solubility of silver acetate in the presence of nitric acid
What will be the effect on the solubility of $0.1\ \mathrm{mol}$ of $\ce{CH3COOAg}$ in presence of $1\ \mathrm{l}$ of $0.1~\mathrm{M}\ \ce{HNO3}$ solution?
$$K_\mathrm{sp} (\ce{CH3COOAg}) = 10^{-...
- 95
1
vote
1
answer
772
views
Understanding effect of ph on solubility of salt
In the following picture why Ksp is not simply S2- ? Why is f included with one species only? Please explain the last part.
What does f represent and why it is used in molar solubility?
user24679
1
vote
1
answer
128
views
Unique Solubility Expression for Sulfide Salts
While looking at aqeuous $\ce{K_{sp}}$ values in the back of my textbook, I noticed that there is a asterisk by all of the sulfide compounds (such as $\ce{HgS}$), and the asterisk says, "For a ...
- 1,610
6
votes
1
answer
175
views
Determine the concentration of hydrogen cations to prevent precipitation of monocalcium phosphate?
Determine the $\ce{[H+]}$ needed to just prevent precipitation by $\ce{H2PO4-}$ in a $\pu{0.25 M}$ $\ce{H3PO4}$ solution that has $\ce{[Ca^2+]} = \pu{0.15 M}$.
The $K_\mathrm{a1}$ of $\ce{H3PO4}$ is ...
- 2,042
4
votes
2
answers
16k
views
Dissociation of benzoic acid
Benzoic acid is a weak acid, so it does not completely dissociate in water. I know that the dissociation equation of benzoic acid is:
$$\ce{C6H5CO2H <=> H+ + C6H5CO2-}$$
The question I'm ...
- 41
2
votes
2
answers
2k
views
How concentrated can an acid be?
How concentrated can an acid be without it being supersaturated? Is there a certain limit to how concentrated an acid or base can be?
When I mean concentration, I mean molarity; so how concentrated ...
- 3,050
4
votes
1
answer
2k
views
Are all strong bases alkalis?
In my text book, it says that strong bases are alkalis because they fully dissociate in aqueous solution. But I'm not too sure of this. Can you not have a weak alkali? And can you not have a strong ...
- 1,697