All Questions
Tagged with aqueous-solution ions
82
questions
28
votes
7
answers
22k
views
Why is silver chloride less soluble than silver nitrate?
Related: Reaction between silver nitrate and aluminum chloride
Experimentally, $\ce{AgCl}$ is insoluble in water, but $\ce{AgNO3}$ is soluble. They're pretty common in a lab (well, $\ce{AgCl}$ is a ...
- 15.2k
20
votes
2
answers
1k
views
Hydration of H⁺ ion
I know that $\ce{H+}$ is not possible in water and it is present as $\ce{H3O+}$. But later on I come to know that even $\ce{H3O+}$ is not possible and that it is present as $\ce{H9O4+}$.
Why does this ...
- 1,453
13
votes
2
answers
8k
views
Why does the ionic product of water remain constant after addition of non-neutral solute?
In my textbook, it is given that the ionic product of water $K_\mathrm{w}$ remains constant even when a non-neutral solute such as an acid is added to it.
$$K_\mathrm{w} = \ce{[H3O+][OH-]}$$
When a ...
- 295
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
10
votes
1
answer
10k
views
How does the HCl-KCl Buffer work?
I have just been studying the $\ce{HCl}$-$\ce{KCl}$ 'buffer', but there are still quite a few things I am uncertain about. I would appreciate any help in clearing up some questions I have.
What I ...
- 445
7
votes
1
answer
1k
views
Is there a material that ions can pass through but water can’t?
I was wondering whether there is a material that can pass ions (such as the ions existing in seawater) but not water. I am aware that water molecules are smaller, so they can pass through some ...
- 223
7
votes
1
answer
7k
views
Does iron(III) sulfate react with copper?
As my understanding, there should be an oxidation-reduction reaction:
$$
\ce{2 Fe^3+ + Cu → 2Fe^2+ + Cu^2+}
$$
However, I always see the process using $\ce{FeCl3}$ to etch copper, but I never ...
- 173
6
votes
1
answer
5k
views
Hybridization of Na in [Na(H2O)6]+
In the complex ion $\ce{[Na(H2O)6]+}$, the sodium cation forms 6 coordinate bonds with water ligands. Typically this octahedral form is associated with $\mathrm{sp^3d^2}$ hybridization as far as I ...
- 723
6
votes
1
answer
50k
views
Net ionic equation with only aqueous ions
When you turn a balanced equation into a net ionic equation, you ignore all the ions that are spectator ions (aqueous on one side as well as the other). You only write the solid and the aqueous ions ...
- 181
6
votes
1
answer
4k
views
What is the exact definition of Salinity?
I am a bit unclear on the definition of salinity. I have always thought of it as simply total dissolved ions.
Wikipedia seems to agree "saltiness or dissolved salt content" but many other sources ...
- 792
5
votes
2
answers
3k
views
Calculating approximate pH of polyprotic acids
When I took up ionic equilibria and titrations after a long break, I found it hard to solve the questions regarding pH calculations of polyprotic acds. Consider these two questions as examples:-
...
- 6,795
5
votes
1
answer
3k
views
What happens to potassium if potassium permanganate is reduced in a redox reaction? How can I identify spectator ions?
I'm trying to get a fool-proof way of finding the products of a redox reaction. I can do both the oxidation and reduction the half reactions. For example in the potassium permanganate with hydrogen ...
5
votes
1
answer
2k
views
How is tea affecting water's color?
Black tea is an amazing product of the green tea leaves. A recent study has proven that;
The anion profile for the tea solution indicated that oxalate and citrate were the major anions detected.
...
- 10.7k
5
votes
1
answer
749
views
Trichloride ion (c.f. triiodide ion)
While triiodide ion is commonly known, why is that trichloride ion (and its salts) almost unheard of? While it does exist according to literature, why is the stability of trichloride ion in aqueous ...
- 51
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