what is the ph of a solution that has the same number of hydrogen ions as hydroxide ions? 0 1 7 14
what is the ph of a solution that has the same number of hydrogen ions as hydroxide ions? 0 1 7 14
Answer
Explanation:
Step1: Recall pH - pOH relationship
In any aqueous solution, $pH + pOH=14$.
Step2: Analyze neutral - solution condition
When the number of hydrogen ions ($[H^+]$) is equal to the number of hydroxide ions ($[OH^-]$), the solution is neutral. For a neutral solution, $[H^+]=[OH^-]=1\times10^{- 7}\ M$.
Step3: Calculate pH
The formula for pH is $pH =-\log[H^+]$. Substituting $[H^+]=1\times10^{-7}\ M$ into the formula, we get $pH=-\log(1\times 10^{-7})$. Since $\log(1\times 10^{-7})=-7$, then $pH = 7$.
Answer:
C. 7