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The PH of 0

Question 20

Multiple Choice

The pH of 0.010 M H3PO4(aq) is 2.24; estimate the concentration of PO43- in the solution.For H3PO4,the values of Ka1,Ka2,and Ka3 are 7.6 *10-3,6.2 * 10-8,and 2.1 * 10-13,respectively.


A) 5.8 * 10-3 M
B) 2.1 * 10-13 M
C) 7.6 * 10-3 M
D) 6.2 * 10-8 M
E) 2.3 * 10-18 M

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