Which of the following 0.1M aqueous solutions has the lowest pH at 25 C? A. K2HPO3...
Which of the following 0.1M aqueous solutions has the lowest pH at 25 C?
A. K2HPO3
B. K2PO3
C. NaH2PO3
D. Li3PO3
E. NaOH
(the answer is C, but can someone explain why)
Homework Answers
lowest pH --> will be the most acidic
then
compare
A. K2HPO3 = HPO3-2 forms, only 1 proton to donate
B. K2PO3 = PO4-3 will have no protons
C. NaH2PO3 = H2PO3- has 2 protons to donate,
D. Li3PO3 = PO4-3 has no protons to donate
E. NaOH = this is a strong base
then, we need the most acidic
acid = proton donor
the species with most protons
NaH2PO4
Add Answer to:
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