All Questions
Tagged with acid-base stoichiometry
47
questions
8
votes
2
answers
7k
views
How to calculate the pH of an acetic acid/ calcium acetate buffer?
Problem:
A buffer was made by mixing $\pu{500 mL}$ of $\pu{1 M}$ acetic acid and $\pu{500 mL}$ of $\pu{0.5 M}$ calcium acetate.
What are the resulting concentrations of acetic acid (henceforth ...
- 81
8
votes
1
answer
805
views
Why do these two calculations give me different answers for the same acid-base titration?
In class, I performed an weak acid-strong base titration using commercial white vinegar and sodium hydroxide with the aim of finding the concentration of of ethanoic acid in the vinegar, and I used ...
- 419
6
votes
1
answer
2k
views
Calculating pH in titration of monoprotic weak acid with strong base
$25.0\:\mathrm{ml}$ of $0.10\:\mathrm{M}$ $\ce{CH3COOH}$ is titrated with $0.10\:\mathrm{M}$ $\ce{NaOH}$. What is the $\mathrm{pH}$ after the addition of $30.0\:\mathrm{ml}$ $\ce{NaOH}$?
In broad ...
- 171
5
votes
1
answer
15k
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Creating Boric Acid from Borax and Hydrochloric Acid
I'm working on an experiment in school and I need to create 200 mL of 2 mol/L boric acid. According to a formula I found on wikipedia, boric acid can be created with a reaction with ...
- 153
5
votes
1
answer
1k
views
Back titration of excess HCl used for dissolving limestone
$15.0~\mathrm{mL}$ of $1.4~\mathrm{M}\ \ce{HCl}$ was mixed with $1.00~\mathrm{g}$ of limestone (impure $\ce{CaCO3}$) until all the solid had dissolved. The solution was then transferred to a conical ...
- 51
3
votes
2
answers
827
views
If there are multiple bases in solution and a strong acid is added, will both bases react?
For example, if there is one mole of carbonate ions ($\ce{CO3 ^2-}$) and sulfate ions ($\ce{SO4 ^2-}$) in a solution, and one mole of hydrochloric acid ($\ce{HCl}$) is added, will the one mole of ...
- 309
3
votes
1
answer
1k
views
How Many mL of 1.0M HCl Would be Required to Completely Decompose Sucrose into Glucose and Fructose?
I am currently conducting an experiment into the glucose content of certain sports drinks. However, I have hit a roadblock. A majority of the drinks that I intend to test, contain sucrose. I am ...
- 133
3
votes
1
answer
11k
views
How to find the concentration of an of ammonia solution by titration with nitric acid?
I am stuck with this question I am doing:
To determine the ammonia ($\ce{NH3}$) concentration in a cleaning product, a chemist diluted 20 mL of the product to 500 mL. Of the 500 mL solution, 25 mL ...
- 219
2
votes
1
answer
2k
views
Mixing Ca(OH)2 with Ca(NO3)2
Mixing $\ce{Ca(OH)_2}$ with $\pu{0.1 M}$ concentration of $\ce{Ca(NO3)2}$.
What will actually happen in the process? What I will see with my eyes? I know that $\ce{Ca^2+}$ cation with concentration ...
- 305
2
votes
1
answer
252
views
What did Richter mean regarding an acid base reaction?
Recently I've been reviewing concepts belonging to the history of chemistry. But I came stuck at trying to understand a passage which I read from wikipedia entry (and which it seems has been mentioned ...
2
votes
2
answers
10k
views
Why is potassium phosphate KH2PO4 in this reaction?
This is a continuation of this question because the first thing that came in my mind is that why potassium phosphate in this reaction is $\ce{KH2PO4}$ and not $\ce{K3PO4}$?
In the wikipedia article ...
- 26.3k
2
votes
2
answers
3k
views
Application of limiting reagents and acid-base stoichiometry
I'm having a bit of trouble with the latter questions of this problem.
$\pu{15.0 mL}$ of $\pu{1.4 M}$ $\ce{HCl}$ was mixed with $\pu{1.00 g}$ of $\ce{CaCO3}$ until all the solid had dissolved. The ...
- 37
2
votes
2
answers
998
views
When mixing lye and citric acid, which citrate will form?
I'm trying to combine precise amounts of citric acid and lye to get sodium citrate with minimal amount of reacted acid/base. I'm not so sure how stochiometry works, but I could sure learn that from ...
- 2,518
2
votes
1
answer
30k
views
How to calculate the volume of a sodium hydroxide solution necessary to add to water, to raise the pH to a certain value?
What volume of $\pu{0.300N}\, \ce{NaOH}$ would be needed to bring $\pu{16.0 mL}$ of distilled water that has a $\mathrm{pH}$ of $7.00$ to a new $\mathrm{pH}$ of $12.42$?
This is my attempt at a ...
- 21
2
votes
2
answers
2k
views
Balanced equation for neutralisation reaction betweeen potassium carbonate and hydrochloric acid
They seem all correct to me, is there any reason why one reaction would happen over the other(s)?
$$\begin{align}
\ce{K2CO3 + 2 HCl &-> 2 KCl + H2CO3}\\[6pt]
\ce{K2CO3 + 2 HCl &-> 2 KCl ...
- 21