If a solution has a pH of 7, this means that
A) there are no H? ions in the water.
B) this is a solution of pure water.
C) the concentration of H? ions in the water equals the concentration of OH? ions in the water.
D) this is a solution of pure water, and the concentration of H? ions in the water is 10?7 M.
E) this is a solution of pure water, and the concentration of H? ions equals the concentration of OH? ions in the water.
Answer: C
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