Question: What's the HPO4 2 that has less than 89.3 as an H2PO 4 and 3.02×10 −5 as the PO4 3?
SQL: SELECT "[HPO 4 2− ]/[A] (%)" FROM "2-188378-1" WHERE "[H 2 PO 4 − ]/[A] (%)" < 89.3 AND "[PO 4 3− ]/[A] (%)" = '3.02×10 −5';

Question: What the [A] that has more than 8.29 as the H2PO 4 and 1.30×10 −8 as the PO4 3?
SQL: SELECT "[A] (mol/L)" FROM "2-188378-1" WHERE "[H 2 PO 4 − ]/[A] (%)" > 8.29 AND "[PO 4 3− ]/[A] (%)" = '1.30×10 −8';

Question: What's the [A] when the H2PO 4 is 61.7?
SQL: SELECT "[A] (mol/L)" FROM "2-188378-1" WHERE "[H 2 PO 4 − ]/[A] (%)" = 61.7;