Home >
Community >
What is the difference between alkalinity and the strength of a base?
Upvote
32
Downvote
+ Medical research
+ Acids
+ Chemistry
+ Organic chemistry
Posted by
Adebowale Adeyemi
What is the difference between alkalinity and the strength of a base?
Bases are substances that react with acids and neutralise them. They are usually metal oxides, metal hydroxides, metal carbonates or metal hydrogen carbonates. Many bases are insoluble - they do not dissolve in water. If a base does dissolve in water, we call it an alkali.
Alkaline solution/compound is the same as a basic solution/compound. But you can specify "alkali" to refer to those bases that are soluble in water and that are salts of alkaline or alkaline earth metals too.
A basic substance is usually one or two metal atoms bonded with an oxygen atom to make OXIDES. An alkaline substance is like a base, but it involves hydrogen in the alkali molecule, so that it forms HYDROXIDES.
So, in general, Bases are Oxides and Alkalis are Hydroxides.
Alkaline are those which can give OH- ions when dissolved in water but basic are those which react with acid to give water and salt so compounds containing OH- termed as Alkaline like NaOH, KOH etc on other hand CaO , Na2O are basic but not alkaline
Any basic substance has a power of hydrogen, or pH, above 7.0, the pH of pure water. Acidic substances have a pH of below 7.0. Basic substances are basic because they are capable of accepting hydrogen ions, and hydrogen ions are what give acids their caustic properties.
Bases are substances that react with acids and neutralise them. They are usually metal oxides, metal hydroxides, metal carbonates or metal hydrogen carbonates. Many bases are insoluble - they do not dissolve in water. If a base does dissolve in water, we call it an alkali.
Alkaline solution/compound is the same as a basic solution/compound. But you can specify "alkali" to refer to those bases that are soluble in water and that are salts of alkaline or alkaline earth metals too.
A basic substance is usually one or two metal atoms bonded with an oxygen atom to make OXIDES. An alkaline substance is like a base, but it involves hydrogen in the alkali molecule, so that it forms HYDROXIDES.
So, in general, Bases are Oxides and Alkalis are Hydroxides.
Alkaline are those which can give OH- ions when dissolved in water but basic are those which react with acid to give water and salt so compounds containing OH- termed as Alkaline like NaOH, KOH etc on other hand CaO , Na2O are basic but not alkaline
Any basic substance has a power of hydrogen, or pH, above 7.0, the pH of pure water. Acidic substances have a pH of below 7.0. Basic substances are basic because they are capable of accepting hydrogen ions, and hydrogen ions are what give acids their caustic properties.
The alkalinity of a solution is a measure of its buffering capacity. The buffering capacity refers to how much acid can be added to the solution before there is a marked change in the pH.
The “strength” of a base is a somewhat nebulous term. “Strong base” vs “weak base” refers to the degree to which the base ionizes in water. NaOH, KOH, etc are strong bases, while Al(OH)3 is a weak base because only some of the dissolved base ionizes. The term “strength of a base” may refer to its concentration with “stronger” bases being more concentrated.
The alkalinity of a solution is a measure of its buffering capacity. The buffering capacity refers to how much acid can be added to the solution before there is a marked change in the pH.
The “strength” of a base is a somewhat nebulous term. “Strong base” vs “weak base” refers to the degree to which the base ionizes in water. NaOH, KOH, etc are strong bases, while Al(OH)3 is a weak base because only some of the dissolved base ionizes. The term “strength of a base” may refer to its concentration with “stronger” bases being more concentrated.
An alkaline substance is like a base, but it involves hydrogen in the alkali molecule, so that it forms HYDROXIDES.
So, in general, Bases are Oxides and Alkalis are Hydroxides.
but basic are those which react with acid to give water and salt
so compounds containing OH- termed as Alkaline like NaOH, KOH etc on other hand CaO , Na2O are basic but not alkaline
FOLLOW ME ON QUORA FOR MORE ANSWERS…
***Thanks and Regards***
—Chaitanya
An alkaline substance is like a base, but it involves hydrogen in the alkali molecule, so that it forms HYDROXIDES.
So, in general, Bases are Oxides and Alkalis are Hydroxides.
but basic are those which react with acid to give water and salt
so compounds containing OH- termed as Alkaline like NaOH, KOH etc on other hand CaO , Na2O are basic but not alkaline
FOLLOW ME ON QUORA FOR MORE ANSWERS…
***Thanks and Regards***
—Chaitanya
More
VOTE
The alkalinity of a solution is a measure of its buffering capacity. The buffering capacity refers to how much acid can be added to the solution before there is a marked change in the pH.
The “strength” of a base is a somewhat nebulous term. “Strong base” vs “weak base” refers to the degree to which the base ionizes in water. NaOH, KOH, etc are strong bases, while Al(OH)3 is a weak base because only some of the dissolved base ionizes. The term “strength of a base” may refer to its concentration with “stronger” bases being more concentrated.
The alkalinity of a solution is a measure of its buffering capacity. The buffering capacity refers to how much acid can be added to the solution before there is a marked change in the pH.
The “strength” of a base is a somewhat nebulous term. “Strong base” vs “weak base” refers to the degree to which the base ionizes in water. NaOH, KOH, etc are strong bases, while Al(OH)3 is a weak base because only some of the dissolved base ionizes. The term “strength of a base” may refer to its concentration with “stronger” bases being more concentrated.
More
VOTE