Chemistry - Complete P-block Question with Solution | TestHub
The hydrogen atoms connected in the form of -OH bonds with central atom in an oxy-acid is called acidic hydrogen. oxyacid contains atleast one acidic hydrogen.
Number of moles of NaOH required for the complete neutralisation of one mole of acid is maximum for
Options:
Answer:
Solution:
The number of moles of NaOH required for complete neutralization depends on the basicity of the acid. Basicity is the number of replaceable H⁺ ions.
A. H₂S₂O₇ (Pyrosulfuric acid) is a dibasic acid, requiring 2 moles of NaOH.
B. H₃PO₂ (Hypophosphorous acid) is a monobasic acid, requiring 1 mole of NaOH.
C. H₃PO₄ (Phosphoric acid) is a tribasic acid, requiring 3 moles of NaOH.
D. H₄P₂O₅ (Pyrophosphorous acid) is a dibasic acid, requiring 2 moles of NaOH.
Thus, H₃PO₄ requires the maximum number of moles of NaOH.
