All Questions
Tagged with ionic-compounds acid-base
29
questions
13
votes
2
answers
2k
views
Could ammonium azanide exist?
In my first high school chemistry class, I misremembered nitrate as being $\ce{NH2-}$, rather than $\ce{NO3-}$, and wrote down a formula for "ammonium nitrate" that was $\ce{NH4NH2}$ (rather ...
- 265
1
vote
1
answer
112
views
How do clay particles form a colloidal mixture?
I have been learning about water coagulation in my chemistry textbook. Apparently, before being treated, water has clay particles, primarily silicates and aluminosilicates, which apparently have a ...
- 29
-2
votes
2
answers
891
views
Isn't hydrogen chloride a salt, because it is an ionic compound? [closed]
So I just learned in chemistry that salts are ionic compounds.
Shouldn't,
$\ce{H+Cl-}$ be a salt since hydrogen ion has positive charge and chloride ion has negative charge? If $\ce{HCl}$ is a salt ...
3
votes
1
answer
203
views
Is there a notion of generalized acidity for lithium ions?
From my understanding, the basic notions of acidity can be explained by considering a cup of pure water, and then adding a substance to it which creates either free $\ce{H+}$, or free $\ce{H3O+}$ and $...
- 317
0
votes
1
answer
293
views
A question about net ionic equations
I have a question regarding net ionic equations. In a solution, sodium fluoride and hydrochloric acid are mixed together. The "correct" net ionic equation is shown below. However, how can this ...
- 21
0
votes
1
answer
115
views
Calculating concentration of OH⁻ ions [closed]
Calculate concentration of $\ce{OH-}$ ions in $\pu{0.66 mol L^-1}$ solution of $\ce{NH4+}.$
I think that there might be something missing, as the only law I have for this kind of problems is
$$[\ce{...
- 17
3
votes
4
answers
2k
views
Calculation of Degree of Dissociation from Ostwald's Dilution Law
A "weak" electrolyte, $\ce{A+B-}$, ionizes in solution as:
$$\ce{AB <=> A+ + B-}\tag{1}$$
$$ K_d =\dfrac{\ce{[A+][B-]}}{\ce{[AB]}}=\dfrac{(\alpha c_{0})(\alpha c_{0})}{(1-\alpha )c_{0}}=\...
- 333
-1
votes
1
answer
383
views
Reaction of copper oxide with acid [closed]
Copper metal is less electropositive than hydrogen and thus less reactive. It is unable to displace hydrogen ions from a solution of sulfuric(IV) acid.
Why then would copper oxide or copper carbonate ...
- 494
3
votes
2
answers
332
views
Why are alkali metal compounds like sodium hydride or sodium amide strong bases but weak nucleophiles?
I understand why compounds such as $\ce{NaH}$ or $\ce{NaNH2}$ are weak nucleophiles: as they aren't very soluble in organic solvents, they react only on the clusters' surface. But why are they strong ...
- 31
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
7
votes
1
answer
13k
views
Is calcium chloride an acidic or basic salt?
What I reason:
Calcium chloride is the salt of hydrochloric acid and calcium hydroxide. Calcium hydroxide is usually not considered a strong base, and I believe this is because of it's low solubility. ...
- 165
1
vote
1
answer
66
views
Dissociation behaviour of polyelectrolytes
Assuming a solution of 100 polycationic molecules, each of them carrying 100 amino groups and an apparent pKa of 6.5. Would it mean that, at a pH of 6.5,
50 molecules will be fully protonated
50 ...
- 11
1
vote
1
answer
4k
views
How does Borax Solution act as a buffer? [closed]
What type of buffer is it? If it's a Weak Acid-Conjugate Base type of buffer, what is the weak acid and conjugate base?
1
vote
1
answer
480
views
Why do we use different arguments for determining the strength of hydracids and solubility of ionic compounds?
HI is a stronger acid than HF. Why? Because when dissolved in water, the bigger iodide ion handles the negative charge way better than the small fluoride ion. So Iodide ion is a weak conjugate base ...
- 187
10
votes
1
answer
20k
views
Are all ionic compounds salts?
According to Wikipedia:
A salt is an ionic compound that can be formed by the neutralization
reaction of an acid and a base.
Are all ionic compounds salts? Are all salts ionic compounds?
- 111