Acids and bases ws 2


Published on

Published in: Technology, Business
  • Be the first to comment

  • Be the first to like this

Acids and bases ws 2

  1. 1. Name __________________________________________ Date _________________ Period_____________ Acids and Bases Worksheet #2 1. An Arrhenius acid dissociates to form ________. An Arrhenius base dissociates to form __________ ions. An acid is a proton ____________ in the Bronsted-Lowry theory. A base is a proton ____________ in the Bronsted- Lowry theory. 2. What is the hydronium ion? What is its concentration in neutral water? 3. What ion is always produced when an acid reacts with water? 4. What ion is always produced when a base dissociated in or reacts with water? 5. Some acids are described as strong while others are called weak. In this context, the terms strong and weak refer to what? Name each of the following acids and bases. Then designate each of them as an Arrhenius acid or base, Bronsted-Lowry acid or base by checking the appropriate boxes. Substance Name Arrhenius Acid Arrhenius Base Bronsted- Lowry Acid Bronsted- Lowry Base 6. HNO 3 7. NH 3 8. HC 2 H 3 O 2 9. KOH 10. H 2 SO 4 11. CO 3 2- 12. The formula for pH is - log[_____] The [ ] stand for molarity. 13. What is the pH range for acidic solutions? 14. What is the pH range for basic solutions? 15. Neutralization means the concentration of the acid __________ the concentration of the base. 16. What is always produced in a neutralization reaction? 17. What is a salt? 18. Are salts all electrolytic? What two factors determine if a salt is electrolytic? 19. Two acids are diluted with water to a concentration of 0.1M. The solution of acid A has a pH of 1.0. Acid B has a pH of 4.0. What do these pH values indicate about acids A and B?
  2. 2. 20. Identify the acid, base, conjugate acid and conjugate base in each of the following reactions. a. HSO4 (aq) + C2O4 2- (aq)  SO4 2- + HC2O4 - (aq) b. NH3 (aq) + H2O  OH– (aq) + NH4 + (aq) c. C2H3O2 – (aq) + H2O  HC2H3O2 (aq) + OH–(aq) d. H2O + H2O  H3O1+ + OH1- e. H2O + S2- (aq)  HS- (aq) + OH1- (aq) f. CN- (aq) + HC2H3O2(aq)  HCN (aq) + C2H3O2 - (aq) g. HNO2 (aq) + H2O  H3O+ (aq) + NO2 - (aq) 21. Classify each of the following as either an acid or a base: a. The substance has a bitter taste ______________________ b. H2SO4 ______________________ c. KOH ______________________ d. litmus paper dipped in this turns red ______________________ e. HNO3 ______________________ f. NH3 ______________________ g. reacts with active metals to produce hydrogen gas ______________________ h. has a slippery feel ______________________ i. has a sour taste ______________________ Fill in the blanks in the statements below using the following terms: strong, weak, and concentration. 22. Acids that dissociate completely in water are called _____________________ acids. 23. Acids that dissociate slightly in water are called _________________________acids. 24. Bases that dissociate completely in water are called ____________________ bases. 25. Bases that dissociate slightly in water are called _______________________ bases. 26. The moles of solute molecules per volume of solvent refers to the ______________________ of the solution.
  3. 3. 27. A more concentrated solution of a ___________ acid is needed to match the number of hydrogen ions produced by a strong acid.