High School Acids & Bases

15 Points Per Correct Answer - No time limit  

1. What is an Arrhenius Acid? A substance which is water soluble A substance with a pH greater than 7 A substance which releases hydroxide ions in water A substance which releases hydrogen ions in water

2. Which of the following react with metals? Bases Any substance with a pH greater than 7 Both acids and bases Acids

3. What is the pH of water at 25 degrees c? 8 5 6 7

4. When you add pH to pOH you always get _________. Answer: (Two digit number)

5. What is an amphiprotic substance? A substance that acts both as an acid and a base An organic acid A substance that only exists in an aqueous form A monoprotic base

6. What does a strong base do in solution? causes the solution to become charged it varies depending on the solutions contents establishes an equilibrium becomes fully ionized

7. What is the range of pH for a acid? less than 7 0-7 greater than 7 7-14

8. What is an equivalence point? The point where mol H+ =mol OH- The point where a substance becomes neutral The point where an indicator changes colours All of the above

9. What is Kw? An element A buffer solution An alternative measurement scale for pH The ionization constant for water

10. What is a buffer solution? A solution that changes pH quickly Any basis solution A solution that measures pH A solution that resists pH changes