Practice Base in Chemistry
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
A substance that accepts \text{H}^+ ions (protons) or donates \text{OH}^- ions when dissolved in solution, raising the pH above 7. Under the Bronsted-Lowry definition, any proton acceptor is a base.
Slippery substances that can neutralize acids—they remove hydrogen ions.
Example 1
easyAccording to the Arrhenius definition, what makes a substance a base? Give two examples.
Example 2
mediumAmmonia (\text{NH}_3) is a base but does not contain \text{OH}^-. Using the Brønsted-Lowry definition, explain how \text{NH}_3 acts as a base.
Example 3
mediumIdentify whether NaOH is an acid or a base. Write the dissociation equation in water.
Example 4
easyIs a solution with pH = 12 acidic, neutral, or basic?
Example 5
easyA base is added to water. What happens to the hydrogen-ion concentration, and why?