A Solution Contains 10 $\times$ 10²
D)50
E)2 $\times$ 10²

Multiple Choice

A solution contains 10.mmol of H₃PO₄ and 5.0 mmol of NaH₂PO₄.How many milliliters of 0.10 M NaOH must be added to reach the second equivalence point of the titration of the H₃PO₄ with NaOH?

A) 250
B) 150
C) 1.0 $\times$ 10²
D) 50
E) 2.0 $\times$ 10²