10 points chem question help please
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10 points chem question help please

[From: ] [author: ] [Date: 11-12-14] [Hit: ]
B. [H+]= 10-7 M,C. All of these can exist.D. [H+]= 10-13 M,......
Choose the pair of concentrations that cannot be in a given aqueous solution at 25°C.

A. [H+] = 10 M, [OH–] = 10-15 M

B. [H+] = 10-7 M, [OH–] = 10-7 M

C. All of these can exist.

D. [H+] = 10-13 M, [OH–] = 10-1 M

E. [H+] = 10-3 M, [OH–] = 10-11 M

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I don't see a reason why any of these shouldn't be able to exist. These are essentially just solutions with varying ranges of acidity and basicity. A solution can have any pH so I would choose the answer C.

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They can all exists. [H+]*[OH-] always equals 10^-14. The first choice is the same as 10^1, which multiplied by the OH- concentration still gives 10^-14. But keep me as far away from that solution as possible..

The answer's B.

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C
1
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