All Questions
11
questions
0
votes
0
answers
109
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Comparative Solubility of Double Salts
Is there a tendency that could be used to generally forecast how a double salt might dissolve in aqueous medium compared to the simple salts of its constituents?
Example:
There is metal A, metal B and ...
- 1,097
-1
votes
1
answer
385
views
Can the ions of dissolved salts be physically separated with a strong enough external electric field?
Say you had a arbitrary amount of sodium chloride dissolved in water. Could an external electric field (e.g. the electrically charged plates in Millikan's oil drop experiment) physically pull apart ...
-4
votes
2
answers
4k
views
Why does acetic acid (CH3COOH) conduct electricity the worst in comparison to HBr, HCOONa and NaNO3 [closed]
Which of the given substances (in an aqueous solution) conducts electricity the worst: $\ce{CH3COOH}$, $\ce{HBr}$, $\ce{HCOONa}$ and $\ce{NaNO3}$?
I've found this assingment included in the 2017 ...
-2
votes
1
answer
67
views
Peroxide without hydrogen [closed]
How come we always see hydrogen peroxide and never peroxide by itself. Is there such a thing as peroxide ? Does this exist in nature? Why is hydrogen always associated with it? Please note: First ...
- 435
-2
votes
2
answers
87
views
What do we call ions without basic and acidic properties
According to Brønsted theory,
Acids are substances (molecules and ions) donating $\ce{H+}$
Bases are substances (molecules and ions) receiving $\ce{H+}$
I've been trying to find a complete Brønsted-...
- 383
2
votes
0
answers
46
views
Ionic emission spectrum contamination
Imagine that I am trying to identify the presence of ions from among the metals $\ce {Li,Na,K,Ca,Sr, Ba}$ in some solution through their emission spectrum.
By mistake the wire used to introduce ...
- 121
0
votes
1
answer
106
views
Any differences in metal ion emission spectra?
If I measure the emission spectra of potassium using the following solutions
1) $0.1~\mathrm{M}$ of $\ce{KNO3}$
2) $0.1~\mathrm{M}$ of $\ce{K2SO4}$
will I see any significant differences?
I think ...
- 119
0
votes
0
answers
130
views
Different ion effect
I need to have the highest concentration of (bi)carbonate ions in a water solution.
Thus far, my only idea was to use Potassium Bicarbonate (safe and cheap) as it has the highest solubility but it ...
- 19
4
votes
2
answers
20k
views
CuCl2 dissolved in water
We dissolve $10\ \mathrm{g}$ of $\ce{CuCl2}$ in $0.1\ \mathrm{L}$ of water.
Given that:
$M(\ce{Cl})=35.5\ \mathrm{g/mol}$
$M(\ce{Cu})=63.5\ \mathrm{g/mol}$
How can one calculate the molar ...
- 151
12
votes
3
answers
38k
views
Differentiation between zinc, aluminium, and magnesium ions in solution
If I have three aqueous ionic solutions in which I know that the cation is $\ce{Al^3+}$, $\ce{Mg^2+}$, or $\ce{Zn^2+}$, how do I find out which is which?
I was thinking to add $\ce{OH-}$ in the form ...
- 223
0
votes
1
answer
977
views
Why does the potential difference of a current drop, when silver nitrate is added to deionised water?
Semi-related to Why do some salt ions in solution conduct electricity better than others?
After conducting more experiments, using deionised water as an analyte only, I found the potential difference ...
- 265