April 24, 2024, 11:51:54 AM
Forum Rules: Read This Before Posting


Recent Posts

Pages: [1] 2 3 ... 10
1
High School Chemistry Forum / Re: Chemical Reaction
« Last post by Corribus on Today at 09:33:46 AM »
Reaction between aluminium hydroxide and sulphuric acid to produce aluminium sulphate, does need energy from sulphuric acid dilution to kick start this reaction or merely no need energy to kick start since acid and base is exothermic.
If does need kick start energy, how to calculate this energy?
With some rare exceptions, there is virtually always an activation energy. It may be calculated via various quantum chemical calculations - although you'll need specialized software to do it with any degree of accuracy - or you can determine it experimentally using, e.g., an Arrhenius plot.
2
Yea, I thought that I could somehow compare different buffer combinations at the buffer region, getting the area under the curve from 0 titrant added to equivalence point. Stronger buffers will be flatter thus will give less area, vice versa.
3
the fact that titration curves get steeper the stronger the buffers are

Not sure what you mean, strong buffer keeps the pH changes smaller, making the titration curve flat.

The only place where the titration curve gets steep is at the inflection point, but there we are far from the buffering range. And I don't think even there pH change is related to the buffer "strength" at pH where it will be typically used - pH change at inflection point is the highest for strong acids, while buffering capacity is the highest for weak acids.
4
Hey chemists I'm trying to establish a conceptual relationship about acid base buffers for my calc bc final project. So for my project, I had an inspiration from the fact that titration curves get steeper the stronger the buffers are, and that the area under the curve changes so there is somehow an inverse relationship between buffer strength and the area under the curve.

However, I've found struggles conceptually on how to conduct the experiment because there isn't really such a thing like a buffer constant associated with each acid base buffer combination. So even if I get the area under the curve for different titration processes, I couldn't really relate them.

I've also found difficulties in setting up the initial conditions for different acid base buffers that would make them suitable for comparison. Perhaps a constant concentration of conjugate acid/base whatever throughout the buffer combinations?

I'm really intrigued about the concept of incorporating calculus to find relationships in chemistry, but at the same time I'm really perplexed. Is my proposed experiment practical? Or does it even make sense in the first place?
5
This is only a dissociation of Silver iodide in its ions.
Some datas messing.


6
Complete the changes in concentrations for each of the following reactions:

AgI(s)⟶Ag+(aq)x+I−(aq)
7
Organic Chemistry Forum / Re: Inspired by corona
« Last post by Borek on Today at 02:48:15 AM »
Completely out of my area of expertise, but what other sources are possible?
Pages: [1] 2 3 ... 10