Question

In a chemistry book, I came across the following definition. Is it right???
"The number of hydroxide (OH-) ions produced on dissociation of one molecule of the base is called its acidity. Thus NH4OH is monoacidic while Ca(OH)2 is diacidic."

Answer 1

Shouldn't the OH- ions decide its basicity??????

Answer 2

yes it is right oH- decides acidity(max. num of replacable OH- ion in one molecule of an BASE) of cation and H+ decides bacidity(max. num of replacable H+ ion from one molecule of acid) of anion.
And acc. to your question NH4OH here OH has only one -ve charge so it is called monoacidic base( means in the reaction it can replace only one hydrogen of acid) where in ca(oh)2 OH has 2-vecharge (means it can replace 2 hydrogen from acid)so it is called diacidic base.
note:as the num of H+ or OH- charge increases it is termed as:-
1-mono
2-di
3-tri and so on

Answer 3

thanks heena ....
medal for you.....

Answer 4

thnQ ji....

Answer 5

U r welcome ji ......☺

By the way, where r u frm, Heena ????
Does your name mean "Mehndi" ????

Answer 6

yup but dis is my pet name real name to kirti h or i m from india r u on fb????