(Solved): IV. Measurement of pH 1. What substance has an equal number of hydrogen ions \( \left(\mathrm{H}^{+ ...

IV. Measurement of pH 1. What substance has an equal number of hydrogen ions \( \left(\mathrm{H}^{+}\right) \)and hydroxide ions \( \left(\mathrm{OH}^{-}\right) \)? Pure Water 2. What is the \( \mathrm{pH} \) of the above substance? 3. How does the addition of hydroxide ions \( \left(\mathrm{OH}^{-}\right) \)affect the \( \mathrm{pH} \) of your stomach? 4. Go to the lab, Section 4, Exercise 7 to test the \( \mathrm{pH} \) of common solutions. Which solution tested had a pH closest to neutral? Which solution was most basic?