All Questions
6
questions
1
vote
3
answers
176
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pH at maximum concentration of a certain species (Phosphoric acid) [closed]
I am trying to find the pH at which $[H_{2}PO_{4} ^{-}]$ is maximum by only knowing the pKas.
I have tried to derive an equation using kinetics but it failed [1].
After taking a look at the Sillén/...
- 31
4
votes
2
answers
828
views
Why does denaturation of albumen protein cause pH of solution to increase?
I'm interested in the denaturation of proteins by alcohols, specifically by ethanol.
I have devised a simple experiment in which I inject solutions of ethanol (of variable concentrations) into ...
- 151
2
votes
0
answers
75
views
How fast does atmospheric carbon dioxide dissolve into strongly basic solution?
I'm conducting some pH measurements with solutions containing NaOH and I'm a bit concerned that carbon dioxide will dissolve and affect my measurements by lowering the pH according to the reaction:
$$\...
- 397
1
vote
1
answer
131
views
Hydrolysis of a salt B2X
An aqueous solution of soluble salt $\ce{B2X}$ has concentration of 0.1 M.
Given data :
$\ce{K_b(BOH) = 2 × 10^{–5}}$
$\ce{K_{a1}(H2X) = 2 × 10^{–7}}$
$\ce{K_{a2}(H2X) = 5 × 10^{–10}}$
...
1
vote
2
answers
4k
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Finding pH after dilution?
Assume that $\ce{pKa}$ is 4.76
Mix $\pu{50 mL}$ of $\pu{0.1M}$ $\ce{HA}$ and $\pu{50 mL}$ $\pu{0.1M}$ $\ce{NaA}$. This is solution (i). Calculate concentrations of $\ce{HA}$ and $\ce{A-}$, ...
- 11
5
votes
2
answers
4k
views
Does the hydrolysis speed increase when more H+ ions are in the solution?
In hydrolysis of polysaccharides, does the hydrolysis speed increase when more $\ce{H+}$ ions are present in the solution?
So if I were to use $\ce{H2SO4}$ instead of $\ce{HCl}$ (same volumes) then $\...
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