Chemistry S2 Unit 2 – Acids and Bases Check for Understanding Name
Directions: Answer each question using the information and knowledge you currently have. After the teacher grades your quiz, take notes to support the questions and answers. One note for your correct answers, two notes for your incorrect answers.
1) Which of the following is a characteristic of a strong acid?A. It increases the OH– concentration.
B. It does not conduct electricity in water.
C. It reacts with water to form H2 gas.
D. It completely dissociates in water.
My Answer / Correct Answer / Notes
2. Which of the following Kb values represents the strongest base?
A. Kb = 1.26 10-7
B. Kb = 1.26 10-6
C. Kb = 1.8 10-5
D. Kb = 3.8 10-10
My Answer / Correct Answer / Notes3. What is Ka for HNO2(aq) H+(aq) + NO2-(aq)?
A.
B.
C.
D.
My Answer / Correct Answer / Notes
4) Which of the following best defines an acidic solution?
A. A solution with a pH less than 0
B. A solution with a pH greater than 7
C. A solution with a pH equal to 7
D. A solution with a pH less than 7
My Answer / Correct Answer / Notes5) What is the definition of a Lewis acid?
A. A Lewis acid donates an electron pair to a base.
B. A Lewis acid accepts an electron pair from a base.
C. A Lewis acid donates a proton to the solution.
D. A Lewis acid accepts a hydroxide from the solution.
My Answer / Correct Answer / Notes6) Which of the following best describes a Brønsted-Lowry acid-base reaction?
A. Acid + conjugate base base + conjugate acid
B. Acid + conjugate acid base + conjugate base
C. Acid + base conjugate base + conjugate acid
D. Acid + base metal + nonmetal
My Answer / Correct Answer / Notes7) Which of the following is the conjugate base of H3PO4?
A. HPO42–
B. PO43–
C. H4PO4+
D. H2PO4–
My Answer / Correct Answer / Notes8) What is a buffer used for?
A. To prevent a salt from dissolving
B. To neutralize the pH of a solution
C. To prevent an acid from dissociating
D. To limit the pH change in a solution
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