Answer:
At pH=7, number of hydrogen ions would be equal to number of hydroxide ions in a solution.
Explanation:
We know that at 25[tex]0_{C}[/tex], [tex][H^{+}][OH^{-}]=10^{-14}[/tex]
where species inside third bracket represent concentrations in molarity
When number of hydrogen ion will be equal to number of hydroxide ions then [tex][H^{+}]=[OH^{-}][/tex]
So [tex][H^{+}]^{2}=10^{-14}[/tex] or [tex][H^{+}]=10^{-7}M[/tex]
Hence pH=[tex]-log[H^{+}]=-log[10^{-7}]=7[/tex]
