JEE Main Chemistry question
The equilibrium constants for the reactions are: H₃PO₄⇌H⁺+H₂PO₄⁻; K₁. H₂PO₄⁻⇌H⁺+HPO₄²⁻; K₂. HPO₄²⁻⇌H⁺+PO₄³⁻; K₃. The equilibrium constant for H₃PO₄⇌3H⁺+PO₄³⁻ will be:
Answer: (B)
Solution
Overall K = product of the stepwise constants.