1. What is the concentration of OH- ions in saturated limewater if [H3O+] = 3.98 × 10-13 M? Is limewater acidic, basic, or neutral?


2. What is the concentration of OH- ions in a potato and water solution if [H3O+] = 1.6 × 10-6 M? Are potatoes and water acidic, basic, or neutral?


3. Analysis of a sample of maple syrup reveals that the concentration of OH- ions is 5.0 × 10-8 M. What is the pH of this syrup? Is it acidic, neutral, or basic?


4. In a sample of bananas and water, it is found that [H3O+] = 2.51 × 10-5 M. What is the corresponding pH value, and are the bananas and water acidic, neutral, or basic?


5.[OH-] = 7.94 × 10-12 M in a sample of vinegar. What is the pH of the vinegar, and is it acidic, neutral, or basic?