user: Question: What's the [A] when the H2PO 4 is 61.7?
Columns: ['[A] (mol/L)', '[H 3 PO 4 ]/[A] (%)', '[H 2 PO 4 − ]/[A] (%)', '[HPO 4 2− ]/[A] (%)', '[PO 4 3− ]/[A] (%)']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['1', '91.7', 8.29, '6.20×10 −6', '1.60×10 −17']
SQL:

assistant: SELECT "[A] (mol/L)" FROM "Table" WHERE "[H 2 PO 4 − ]/[A] (%)" = 61.7;