Sodium dihydrogen phosphate
Disodium hydrogen phosphate
Sodium phosphate
Phosphoric acid
Answer is Right!
Answer is Wrong!
The correct answer is A. Sodium dihydrogen phosphate.
An acid is a substance that donates protons (H+) in a chemical
reaction. The basicity of an acid is the number of protons that it can donate. Phosphoric acid (H3PO4) is a tribasic acid, which means that it can donate three protons. Sodium dihydrogen phosphate (NaH2PO4) is a dibasic salt, which means that it is formed when one proton is removed from phosphoric acid. Disodium hydrogen phosphate (Na2HPO4) is a monobasic salt, which means that it is formed when two protons are removed from phosphoric acid. Sodium phosphate (Na3PO4) is a tribasic salt, which means that it is formed when all three protons are removed from phosphoric acid.Therefore, sodium dihydrogen phosphate is the only option that is an acid with basicity one.