what is [po 4 3− ]/[a] (%) where [ 2 po 4 − ]/[a] (% one) 94.5?
[A] (mol/L) pH [H 3 PO 4 ]/[A] (%) [H 2 PO 4 − ]/[A] (%) [HPO 4 2− ]/[A] (%) [PO 4 3− ]/[A] (%)
Phosphoric acid
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1-188378-1
Aqueous solution
Aqueous solution
1 1.08 91.7 8.29 6.20×10 −6 1.60×10 −17
10 −1 1.62 76.1 23.9 6.20×10 −5 5.55×10 −16
10 −2 2.25 43.1 56.9 6.20×10 −4 2.33×10 −14
10 −3 3.05 10.6 89.3 6.20×10 −3 1.48×10 −12
10 −4 4.01 1.30 98.6 6.19×10 −2 1.34×10 −10
10 −5 5.00 0.133 99.3 0.612 1.30×10 −8
10 −6 5.97 1.34×10 −2 94.5 5.50 1.11×10 −6
10 −7 6.74 1.80×10 −3 74.5 25.5 3.02×10 −5
table_188378_1
SELECT [PO 4 3− ]/[A] (%) FROM table WHERE [H 2 PO 4 − ]/[A] (%) = 94.5
94.5