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There are three definitions for acids and bases.
Arrhenius definition: An acid is a substance that produces hydrogen (H+) ions in water while a base produces hydroxide (OH-) ions.
Bronsted-Lowry definition: An acid gives up or donates a proton (H+) to another molecule while a base accepts a proton.
Lewis definition: An acid accepts an electron pair in bonding to another molecule/ion while a base donates and electron pair.
Note that if a substance meets one of the first two definitions it probably meets the others as well.
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∙ 12y ago
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Why is limestone considered a base?
If you mean base as in the opposite of acid, limestone is calcium carbonate. The pH of it is 9- any number higher than 7 is considered a base. Number lower than 7 are acid.
What kind of reaction is nitric acid and potassium carbonate is?
This is considered an acid/base reaction.
What are two substances that can be mixed to neutralized each other?
an acid and a base. also-chemical opposites, for eg. acids and alkalis
What combinations of compounds will make a buffer when mixed?
In order to have an effective buffer, one needs to have a weak acid or a weak base, and the salt (conjugate) of that weak acid or weak base. Examples would be :weak acid/conjugate base: acetic acid/sodium acetateweak base/conjugate acid: ammonia/ammonium chloride
Why the weak acid cannot be used as titrant?
If you are titrating a base, using a weak acid as titrant would lead to the formation of a buffer as you added the weak acid. The weak acid would react with the base to form the salt of the weak acid + water, and this would buffer any changes in pH, thus making the titration meaningless.
What is the exact pH of acid?
Well, there really is no "exact" pH of an acid. An acid can be a certain pH, before it is considered a base, and to change an acid to a base would be called titration, but lets not get carried away. The pH of an acid can be anywhere between 0-6 on the pH scale, 7 would be neutral, and 8-14 would be considered a base.
Orange acid or base?
Oranges contain citric acid, and are considered acidic.
Is SRO a base or acid?
an acid because it is an oxide not a hydroxide (that would be a base)
Is sodium bicarbonate considered an acid or a base?
It is a base .... at least to my chemical knowledge
What is true about bronsted-lowry base?
A conjugate base is considered the deprotonated acid.
What Has pH of 7 a acid base or neutral?
0-6 is considered an Acid. 7 is considered a neutral. 8-14 are considered Bases.
Ammonia is base or acid?
Ammonia is generally considered a base, especially in aqueous solutions.
Is water substance classify as a strong acid acid neutral or strong base or base?
Pure water is considered to be neutral
Would vinegar be a base or acid?
Acid
Is NaCl a weak acid?
No, NaCl is neither an acid, weak acid, or a (weak) base. It is considered a salt.
Why is limestone considered a base?
If you mean base as in the opposite of acid, limestone is calcium carbonate. The pH of it is 9- any number higher than 7 is considered a base. Number lower than 7 are acid.
Is magnesium fluoride an acid base or salt?
Neither, MgCl2 is to be considered a neutral salt.
