For the stepwise dissociation of aqueous H3PO4, which of the ...

[deesands]

Question 1

For the equilibrium that exists in an aqueous solution of nitrous acid (HNO₂, a weak acid), the equilibrium constant expression is:

◦ K =.
◦ K =.
◦ K = [H⁺][NO₂^–].
◦ K =.
◦ none of these are correct.

Question 2

For the stepwise dissociation of aqueous H₃PO₄, which of the following is not a conjugate acid–base pair?

◦ HPO₄^2– and PO₄^3–

◦ H₃PO₄ and H₂PO₄^–

◦ H₂PO₄^– and HPO₄^2–

◦ H₂PO₄^– and PO₄^3–

◦ H₃O⁺ and H₂O

[Sammyo]

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Only 49% of students answer this correctly

[deesands]

Thanks for the timely response, appreciate it

[bulacsom]

YES! Correct, THANKS for helping me on my review