Name: __________________________________________ Period: __________ Date Submitted: __________________________________ Acids and Bases Exam Corrections Questions Directions: Answer the questions and SHOW YOUR WORK ON ALL PROBLEMS INDICATED. Submit to Ms. Alejandre in the purple Late Work Turn-In Box by 4:00 pm Friday, May 19, 2017. You will receive half-credit back (average your actual grade with a 100) on your Acids and Bases Exam. 1. According to the Arrhenius definition of an acid, in the reaction below, why is HNO2 considered an Arrhenius acid? Use a complete sentence. HNO2 → H+ + NO2- 2. In order to test the electrical conductivity of some solutions, a chemistry student built a circuit that connected a light bulb to a battery power source through some electrical cables. Match the following three beakers with the types of solutions they contain: strong base, weak base, water. 3. Why is NH3 considered a Bronsted-Lowry base but not an Arrhenius base? Use a complete sentence. 4. What kind of compound reacts with an acid to form a salt and water? 5. A given solution has a [OH-] of 2.3 x10-4 M. What is the pH of that solution? Round your answer to the correct number of significant figures. Show your work. 6. In the reaction below, identify the two conjugate pairs. HBr + H2O → H3O+ + Br− 7. If you have a solution with a [H+] of 8.5 x 10-9 M, what is the pH of the solution to the correct number of significant figures? Show your work. 8. Determine the products of the following reaction: H2CrO4(aq) + 2 LiOH(aq) → _______________________________________________ 9. A chemist puts a pH probe in a solution and measures a reading of 2.00. Is the solution an acid or base? Why? Use a complete sentence. 10. According to the following reaction, why is H2O considered an Arrhenius base? Use a complete sentence. HCl + H2O → H3O+ + Cl- 10. Circle the species in this neutralization reaction that is the Arrhenius base. 2 HBr(aq) + 1 Ba(OH)2(aq) → 1 BaBr2(aq) + 2 H2O(l) 11. During the neutralization of a given solution in the lab, a pOH of 7.13 was recorded. What will be the pH value of that given solution to the correct number of significant figures? Show your work. 12. What is the correct formula for hydrophosphoric acid? 13. Describe the difference between a strong and weak base in terms of dissociation. Use a complete sentence. 14. In the lab, students were given several known acids and bases and asked to determine the identity of an unknown solution given the way it reacted with the known acids and bases. The following table shows their observations after mixing equal volumes of the unknowns with the known solutions. What kind of solution, acid or base, was the unknown solution, and why? Use a complete sentence. Classification of Known Solution What happens when unknown and known are mixed pH after Reaction Strong acid Solution bubbles rapidly and gets much hotter 7 Weak acid Solution produces some bubble and gets warmer 8 Weak base No reaction 13 Strong base No reaction 14 15. What is the the correct IUPAC name of the compound, H2SO4? 16. Give the name and formula for all 6 of the strong acids. 17. Give the name and formula for all 9 of the strong bases. 18. Write a balanced equation for the reaction between copper(II) hydroxide and sulfuric acid. Be sure to write in the predicted products and coefficients. a. Is the salt you wrote in the products acidic, basic, or neutral? 19. Write an equation that shows chlorous acid reacting with water. Identify the acid, base, conjugate acid, and conjugate base. 20. What is the [H+] concentration of acetic acid with a pH of 4.2 to the correct number of significant figures? Show your work.
© Copyright 2026 Paperzz