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Results tagged with acid-base
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user 104835
This tag should be applied to questions concerning acid and base reactions. An acid is capable of donating a hydron/ proton (Brønsted acid) or capable of forming a covalent bond with an electron pair (Lewis acid). A base on the other hand is a chemical species/ molecular entity having an available pair of electrons capable of forming a covalent bond with a hydron/ proton (Brønsted base) or with the vacant orbital of some other species (Lewis base).
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Do all bases release OH-?
There are TWO general types of chemical reactions. Those involving electron pairs or bonds, the electron pairs change their positions in or between molecules, are Acid-Base reactions. The base furnish …
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Is the proton the strongest acid?
The current acid base explanations mostly involve covalent bonding between the acid and the base and frequently in the explanations fail to mention solvation and other subtleties. The high ionization …
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Acids, Bases and Salts?
Aravind, As you can see from the answers and comments you have opened Pandora's box [look her up]. What you have astutely inferred at an early age is that textbooks, teachers, the internet, and everyt …
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What is something that is a strong acid and a strong reducing agent, but not a reducing agen...
The best definition of acids and bases are electron pair acceptors-acids and electron pair donors-bases. These reactions can be considered as 2-electron redox reactions or possibly a quick two step on …
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2
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Why are alcohols considered slightly basic (based on pKa values)?
Alcohols especially methanol and ethanol self-protonate as does water. There are kinetic differences, superdry alcohols have a sharp OH NMR peak that couples to the adjacent carbon H's; the coupling v …
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Only the Hydrogen ions bonded to oxygen are replaceable in Phosphorous acid. Why?
It involves the bond structure and the transition state for the proton transfer. The P-H bond is very covalent and the transition state for proton transfer must necessarily require considerable P-H bo …
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Why are silver halides insoluble in nitric acid
The diagnostic test for Cl-, Br- and I- is reaction with Ag+ in a dilute nitric acid solution. The reason for the nitric acid is not because the silver halides are not attacked by nitric but that the …
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What is the pH of acetone in water?
The exchange with H2O[18] is either acid or base catalyzed because of the amphoteric nature of the carbonyl group. You will have to research the rates in pure water-acetone mixes. Your diagrams seem t …
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Accepted
Why does p-aminophenol oxidize in acid solution
You can read about the quinhydrone electrode here: https://en.wikipedia.org/wiki/Quinhydrone_electrode
This electrode reaction is similar to the oxidation of Para-aminophenol and is measurably reversi …
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Is the hydrolysis of a salt produced by neutralisation a secondary reaction?
The various reactions happen concurrently [not simultaneously] depending on the relative rates, concentrations, activation energies and localized temperature differences. The main reaction in water is …
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Hydrogen Isotopes and Bronsted Lowry Acid
In its common usage "water" is not definitive. A quick glance thru the Wikipedia tome on water [read it, the entry on deuterium depleted water, and on Heavy water] affords an amazing array of properti …
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Why reverse reaction is not possible in the case of dissociation of strong electrolytes and ...
Your thinking is correct. What happens at the extremes of conditions is not understood [or just oversimplified]. Here is a made up example using easy math. Lets give the Ka for a strong acid such as H …
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1
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How does the concentration of H+ ions in HCl change as the pH changes?
This question changes a simple definition of: [pH = the negative logarithm of the hydrogen ion activity in M/L], into a puzzle or possibly an IQ test.
Knowing nothing about pH the relationship between …
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3
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Help troubleshooting inconsistent pH measurements
This seems to be a mixing problem, especially if everything checks out before the addition of the acetic acid and the deviations seem to be towards low pH. Alcohol Vinegar, is this a consistent source …
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How can magnesium hydroxide be a strong base and be sparingly soluble at the same time?
Let's look at it in reverse. Were magnesium hydroxide a weak base, solutions of magnesium ion in water would hydrolyze in water removing hydroxide ions and making solutions of magnesium salts such as …
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