All Questions
11
questions
-1
votes
1
answer
130
views
Why is the ionic product of water also the equilibrium constant of dissociation of water?
This answer presents a derivation of the value of ionic product of water at $25^{\circ}\text{C}$.
The relation $K_\text{eq} = \operatorname{e}^{-\frac{\Delta_\text{r}G^{\circ}}{RT}}$ is used for the ...
- 288
0
votes
0
answers
51
views
Which reaction is happening in the preparation of sulfuric acid through contact process?
I've read that in the preparation of $\ce{H2SO4}$ through the Contact process, on the absortion tower, the gas $\ce{SO3}$ is getting in contact with $\ce{H2SO4} (l)$ , because adding $\ce{SO3}$ to $\...
6
votes
2
answers
208
views
Protons and osmotic potential
In a hypothetical enclosed membrane only permeable to water (including hydronium), where inside the pH is lower than the outside, would water move inside?
- 61
1
vote
1
answer
617
views
Why does pH decrease when diluting a base? [closed]
Take a strong base such a sodium hydroxide
Adding water will result in adding a hydroxide ions as well as hydronium ions to the solution
However if the pH decreases this means that the hydronium ion ...
- 394
1
vote
0
answers
100
views
Is it a coincidence that pKw = 14.00 at SATP?
High school chemistry student here. For our purposes in class for studying acids and bases, we are taught that $\text{p}K_\text{w}=14.00$, which is central for many of our calculations. I assume this ...
- 207
0
votes
1
answer
190
views
Why water won't dissociate more?
In a given sample of water some molecules of water dissociate to give hydronium and hydroxide ion. They say one in 10 million will be dissociated (approx.). What are the reasons behind this? Why water ...
2
votes
1
answer
116
views
The natural equilibrium of water
Why can the equilibrium reaction which exists in water be simply represented as
$$\ce{H2O <=> OH- + H+}$$
rather than
$$\ce{2 H2O <=> OH- + H3O+}$$
Doesn't this change both the ...
- 355
4
votes
1
answer
391
views
Is HCl(l) acidic?
If in a reaction mixture HCl is given in liquid phase, will it behave as an acid ?
I know that an aqueous solution of HCl is acidic but am confused about the liquid phase.
- 1,916
10
votes
2
answers
26k
views
Why is water not part of the equilibrium constant?
In the acid base reaction
$$\ce{NH4+ + H2O <-> NH3 + H3O+}$$
the acidity constant, which is a relation between concentrations is given by
$$K_{\mathrm{a}}=\frac {\ce{[NH3]} \cdot \ce{[H3O+]}}{...
- 413
5
votes
2
answers
370
views
What is the difference between these equations for the Contact process?
Some webpages describe the contact process as this (I left out $\ce{SO2}$, $\ce{SO3}$ production):
$\ce{SO3 + H2SO4 -> H2S2O7}$
After this, it is controllable to add water to the oleum therefore ...
- 59
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