All Questions
17
questions
4
votes
1
answer
391
views
Predict who is the acid and who is the base in an acid-base reaction using pKa
In my book (Bruice) it is specified how it is possible to compare the pKa of two substances to understand who acts as an acid and who as a base. Here's the example in the book:
$\ce{NH3 + H2O}$.
$\...
- 127
0
votes
0
answers
418
views
Reaction of hydrogen peroxide with acetic acid and potassium permanganate
I conducted an experiment where I mixed hydrogen peroxide $\ce{H2O2}$, acetic acid $\ce{CH3COOH}$ and potassium permanganate $\ce{KMnO4}$ under vigorous stirring. The reaction hasn't stopped after 15 ...
user127378
0
votes
0
answers
165
views
Why is the pH of this ammonia solution more acidic than another ammonia solution?
I made two similar ammonia solutions in different ways, and they resulted in different pH, but i'm not sure why.
Solution 1
Added 5.84 g NaCl to a 500 mL flask. Then added 10 mL 25% ammonia solution. ...
- 11
3
votes
1
answer
2k
views
How can I prove ascorbic acid degradation with Uv-vis spectroscopy?
I have to prove scientifically why a sodium ascorbate solution in water turns yellowish - reddish over time. I know ascorbic acid is supposed to oxidize into dehydroascorbic acid, and the latter then ...
- 31
2
votes
0
answers
31
views
About the acidity of Sultiame [closed]
Why is sulthiam base even hough sulfur can accept the electron by resonance from nitrogen
like carbonyl group do?
- 29
0
votes
0
answers
356
views
About the acidity of phenytoin
Can you explain why phenitoin is weak acid even though nitrogen is base?
Does carbonyl group always make structure acid?
If this structure doesn't have carbonyl group, would it be base not acid?
- 29
-2
votes
2
answers
206
views
Is there a correlation between acidity and viscosity of honey? [duplicate]
I was wondering if honey's viscosity has any correlation with its acidity and if not, it would be very helpful if anyone could tell me what variables could affect the viscosity of honey?
- 23
-1
votes
2
answers
2k
views
What happens if the filter paper in vacuum filtration is BIGGER than the buchner funnel diameter? [closed]
I’m wondering what would happen if the filter paper in a vacuum filtration process is bigger than the buchner funnel diameter?
I mean would some differences occurs? Or would the whole experiment ...
- 15
0
votes
0
answers
1k
views
Can a universal indicator turn colorless?
I learned that litmus paper could be bleached by chlorine to turn colorless. I’m wondering if any chemical substances can react with all the components of a universal indicator such that it turns ...
- 117
0
votes
1
answer
763
views
Why is trichloromethane more acidic than trifluoromethane? [duplicate]
In Concise Inorganic Chemistry by JD Lee (4th edition; adapted by Sudarshan Guha), page 78 under the topic "Back Bonding" it is given:
$\ce{CHCl3}$ is more acidic than $\ce{CHF3}$ which is ...
- 2,090
0
votes
1
answer
33
views
How do I calculate the proportion of respective conjugates of one base mixed with several acids (and/or conversely) at different temperatures? [closed]
How do I calculate the proportion of respective conjugates of one base mixed with several acids (and/or conversely) at different temperatures, and is there a free software tool that would allow me to ...
- 451
-1
votes
1
answer
134
views
Which is stronger ? Picric acid or phoshoric acid
I would like to have clarity as to which acid is the stronger acid; picric acid or phosphoric acid.
Because different sources are giving me different answers
1
vote
1
answer
8k
views
Relation between acidity and reactivity?
Up till high school, I've been taught that reactivity and acidity of a substance in a relation that if a substance is acidic and if it's acidity is higher (comparatively to some other substance) than ...
- 432
12
votes
1
answer
2k
views
Why is boric acid soapy to touch?
Bases are soapy to touch because of soap formation on contact with lipids present on our skin. If this is the case then why and how is boric acid soapy to touch?
- 3,487
2
votes
0
answers
148
views
Understanding basicity of heterocyclic compounds [duplicate]
I want to know the reason why,
Pyrrolidine
is more basic than,
Piperidine
Mainly I want to know what affect does the ring structure have on basicity and how does 5 membered rings and 6 ...
- 251