A 0.10 M solution of Na2HPO4 could be made a buffer solution with all of the...

Question

Question

Answer 1

Answer #1

We have 0.10 M HPO42-

It can form buffer if we add PO43- which is conjugate base of HPO42-
So, option 1 and 2 are correct

It can form buffer if we add H2PO4— which is acid of HPO42-
So, option 4 is correct

Answer: option 3

Answer 2

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