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EQUILIBRIUM
Question #29423
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Question
What is the expression for the first ionization constant (Ka1) of a dibasic acid H2X?
A. Ka1 = [H+][X^2–]/[H2X]
B. Ka1 = [H+][HX–]/[H2X]
C. Ka1 = [H+][HX–]/[X^2–]
D. Ka1 = [H+][H2X]/[HX–]
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