Exams › JEE Advanced › Chemistry

In one molecule of pyrophosphoric acid (H4P2O7), what are the numbers of P-OH bonds, P=O bonds, and P-O-P bridges respectively?

1. (1) 3, 3 and 3
2. (2) 2, 4 and 1
3. (3) 4, 2 and 0
4. (4) 4, 2 and 1

Correct answer: (4) 4, 2 and 1

Solution

H4P2O7 has two PO4 tetrahedra sharing one bridging O (one P-O-P), four ionizable OH groups (four P-OH), and one terminal P=O on each phosphorus (two P=O).

Related JEE Advanced Chemistry questions

• What is formed when an excess amount of sodium hydroxide is added to a solution of stannous chloride?
• Which of the following substituted silanes can form a cross-linked silicone polymer upon undergoing hydrolysis?
• Which pairs of reactants most effectively demonstrate the dual acidic and basic behavior of Al2O3.xH2O?
• Among the following oxides, which one acts as the most potent oxidizing agent?
• Among the following compounds, which one acts as the most powerful reducing agent?
• Which xenon-oxygen compound cannot be produced through the hydrolysis of xenon fluorides?

⚔️ Practice JEE Advanced Chemistry free + battle 1v1 →