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Question
What is the hydronium-ion concentration in a 0.030 M solution of carbonic acid, H2CO3? For carbonic acid, Ka1= 4.2 x10-7and Ka2= 4.8 x10-11.
A) 3.0 x10-2M
B) 4.2 x10-7M
C) 4.8 x10-11M
D) 1.1 x10-4M
E) 5.6 x10-5M
Answer
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