All Questions
10
questions
4
votes
1
answer
226
views
Why is hydrated beryllium ion acidic?
The beryllium ion, $\ce{Be^{2+}}$, forms the aquo complex $\ce{[Be(H2O)4]^{2+}}$. According to LibreTexts, this complex is acidic in solution: $$\ce{[Be(H2O)4]^{2+} + H2O -> [Be(H2O)3OH]+ + H3O+}$$
...
- 750
0
votes
0
answers
65
views
Adding a base and a salt to a hydrated complex
The question goes like this:
$\ce{Fe(NO3)3}$ V= $\pu{1 liter}$ and $\ce{[Fe(NO3)3]} =\pu{0.1 moles/liter}$.
Calculate the $\mathrm{pH}$ of this solution using the values of $K$ given.
We add a solid ...
2
votes
1
answer
469
views
Ligand substitution reaction in coordination compounds
I know that the following substitution reaction can take place:
$$\ce{[Cu(H2O)4]^2+ (aq) + 4NH3 (aq) -> [Cu(NH3)4]^2+ (aq) + 4H2O (l)}$$
This is because ammonia is a stronger ligand than water.
...
- 1,280
1
vote
1
answer
107
views
What makes a compound basic? [closed]
Aluminum chlorohydrate is often referred to as basic aluminum chloride.
The pH value of ACH is about 4. How is basicity in this context defined?
- 567
6
votes
1
answer
400
views
Why is there no effective alternative to metal salts in antiperspirants?
Metal salts, especially aluminum compounds are used in antiperspirants to prevent sweating. I found out aluminum chloride hexahydrate, which is found in most antiperspirants, undergoes an acid-base ...
- 567
1
vote
0
answers
84
views
Electron-donating trends for ligands bound to metal complexes
Imagine an inorganic complex with a bunch of terminal ligands. All else the same, would $\ce{F-}$ or $\ce{Br-}$ ligands be more electron-donating and why?
Of course, in terms of $\mathrm{p}K_{\mathrm{...
- 1,352
4
votes
2
answers
2k
views
Is Fe(OH)2 soluble in alkalis?
I have just started inorganic chemistry in school and I have just learnt about metal aqua ions and how they react in water. I learnt that $\ce{[Fe(H2O)6]^2+}$ reacts in water by losing a $\ce{H+}$ ...
- 95
5
votes
1
answer
6k
views
Why is edta in its calcium complex still a tetraanion at pH 10?
$\ce{edta}$ has different forms according to the pH. For example if the pH is $7{-}10$, $\ce{HY^3-}$, whereas if the pH is $11{-}14$ its form is $\ce{Y^4-}$.
But I've come across an exercise where it ...
- 477
2
votes
0
answers
1k
views
Why does copper(II) sulfate react with ammonia?
We've done preparation of Tetraamminecopper(II) sulphate $\ce{[Cu(NH_3)_4(H_2O)_n]SO_4}$ using copper sulphate and 50% ammonia solution.
Initially, a pale blue color of $\ce{Cu(OH)_2}$ appeared with ...
- 1,186
4
votes
1
answer
4k
views
The Acidity of the Hydrated Iron (III) Ion
Why is $\ce{Fe(OH_2)_6^{3+}}$ fairly acidic? This iron has six water molecules coordinated to it.
In other words, water itself is a very weak acid. But when water is coordinated to iron, it becomes ...
- 19k