Q452
An acid having basicity one is
A.
Sodium dihydrogen phosphate
B.
Disodium hydrogen phosphate
AnswerC.
Sodium phosphate
D.
Phosphoric acid
Answer: Option B
Solution
Answer: Option B
Solution:
The basicity of an acid is the number of hydrogen ions (H+) which can be produced by the ionization of one molecule of the acid in aqueous solution. For example, the basicity of hydrochloric acid is 1 since one molecule of HCl produces one H+ ion in solution. Similarly, the basicity of Disodium phosphate (Na2HPO4) is one since it has one H+ displaceable ion.