What is the concentration of oh- in pure water?
a. 1.00 x 10-7 m
c. 55.4 m
b. 0.7 m
d. 1.00 x 107 m

The answer among the choices given is option A. The concentration of OH- in pure water is 1.00 x 10^-7 M. This due to the self-ionization of water into hydroxide ions (OH-) as the base and hydronium ion (H+) as the acid. The concetration of H+ is the same for the OH- resulting to a neutral pH.

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