All Questions
75
questions
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How to calculate the gas-liquid interaction for dissolved HNO3 in water with air?
Thanks for reading this and (maybe) helping me in advance!
I have to face the following problem:
I have got $\ce{HNO3}$ dissolved in water (roughly $\pu{50\%}$) and I want to know how much $\ce{HNO3}...
- 21
0
votes
1
answer
1k
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Why is finding [H+] when given [OH-]= 3.57e-5 M wrong when I use -log[OH-]?
Question/Problem
I know that [H+][OH-]=$10^{-14}$
And the problem asks to find out the concentration of H+ when the concentration of OH- is $3.57*10^{-5}$M
By using the equation above i find that ...
- 300
-1
votes
1
answer
2k
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Finding the molarity of an acid in a titration
I was doing a question that asks the molarity of a 10 mL of tartaric acid that is titrated to phenolphthalein endpoint with 20 mL of 1.0 M NaOH.
I worked it out by equating the molarity of the NaOH ...
-1
votes
1
answer
393
views
Why is the strong acid written in a net ionic equation? [closed]
Strong acids dissolve and break apart into ions, so in a net ionic equation, why are they written?
- 196
2
votes
0
answers
894
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Calculating the pH of buffer solution made of two salts of a polyprotic acid
When we are making a buffer solution by solutions of a weak acid and its salt like $\ce{CH3COOH}$ and $\ce{CH3COONa}$, or by a weak base and its salt like $\ce{NH3}$ and $\ce{NH4Cl}$, we can use the ...
- 5,685
0
votes
1
answer
6k
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How to calculate the pH of a propanoate buffer after addition of sodium hydroxide?
I've calculated the pH of the buffer solution, as seen.
The question I'm referring to is part d), which asks: 'Calculate the pH of the solution after 0.01 mols of NaOH are added to 500$cm^3$ of the ...
- 291
1
vote
1
answer
209
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Finding pH using the -log, why does my calculation differ from the book's answer?
An aqueous solution containing 0.0020 mol/L barium hydroxide, what is the pH? I do the following: 14-(-log(0.0020))=11.3pH. The answer is 11.6.
2.0*10^-3 mol/L sodium hydroxide solution, what is the ...
1
vote
1
answer
747
views
How to filter out magnesium acetate (a soluble salt) quickly and cheaply from water
I am conducting an experiment that involves reacting a weak acid and a weak base to form water and a salt with this overall equation
$$\ce{Mg(OH)2(s) + 2CH3COOH(l) <=> 2H2O(l) + Mg(CH3COO)2(aq)}...
- 151
14
votes
3
answers
2k
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Why stepwise dissociation for acids but not hydroxide bases?
My son asked this over the weekend and I didn't have a good answer: how come with polyprotic acids we assume that the release of each $\ce{H+}$ is progressively harder, but with bases like $\ce{Ca(OH)...
- 143
-1
votes
1
answer
1k
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Basicity of Acetic acid
Acetic acid is a monobasic acid as it disassociates into CH3COO$^-$ and H$^+$.
Why don't the hydrogen atoms of CH3COO$^-$ disassociate too?
- 398
0
votes
1
answer
396
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How do I get the molarity of solution 1 given volume 1, molarity 2, and volume 2? [closed]
For example:
What is the molarity of a $\ce{NaOH}$ solution if $25\rm~mL$ of the solution is exactly neutralized by $44\rm~mL$ of $0.32\rm~M~HCl$?
I know that the abstract function is
$$\text{...
- 101
13
votes
2
answers
10k
views
Should bromine water be called a solution?
Bromine water is a reagent which is used to test for unsaturation in organic compound. It is $2.8~\%$ bromine in water. In many places, it is refer to as bromine solution.
But it is observed that ...
- 26.3k
3
votes
1
answer
2k
views
Acidic and alkaline salt solutions: why do some salt form acid/bases while others don't [closed]
I have a question regarding salts and their solutions. How come some salts, like sodium carbonate and ammonium chloride, produce acids/bases when dissolved in water? Moreover, how can you predict ...
- 140
2
votes
0
answers
94
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If a conductivity meter is calibrated with aqueous standards, can it be used to measure the conductivity of an organic-based solvent system?
Trying to figure out if the calibration solutions for a conductivity probe/meter must be of a similar nature to the system which will be measured. I can only find aqueous calibration solutions online, ...
- 99
0
votes
0
answers
470
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acids, bases, salts, etc
All the chemical compounds can be categorized as acids, bases, and neutral compounds.
There are different theories, namely Arrhenius Theory, Brønsted-Lowry Theory, Lewis Theory, which define the acids ...
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