In a buffer solution consisting NaH_2PO_4 and Na_2HPO_4select the correct statement among the following

In a buffer solution consisting NaH_2PO_4 and Na_2HPO_4select the corr

1.	In a buffer solution consisting NaH_2PO_4 and Na_2HPO_4select the correct statement among the following
Answer» `NaH_2PO_4 ` is ACID and `Na_2HPO_4` is SALT The PH of solution can be calculated using the relation ` :pH =pK_2+ log _(10) "" ([HPO_4^(2-)])/([H_2PO_4^(-) ]) ` `Na_2HPO_4` is acid and `NaH_2PO_4` is salt The pH cannot be calculated Solution :`H_2 PO_4^(-)to HPO_4 ^(2- )` ` A "" " salt of Wa" ` ` pH =pKa_2 +log ""(["salt"])/(["acid"]) `