quiz 18 Introductory General Chemistry Chapter 16

Answer the questions below and then click "submit" to send your answers.

  1. Which of the following species is a Lewis acid? atomic numbers: B = 5, F = 9, N = 7, H= 1, P= 15, Cl = 17

    2. Your answer:
    PCl3
    none of these answers
    NH3
    BF3

  2. What is the conjugate base of HF?

    3. Your answer:
    none of these answers
    HF
    F-
    HF-

  3. What is the conjugate acid of CH3NH2?

    4. Your answer:
    CH3NH2-
    none of these answers
    CH3NH3+
    CH3NH2

  4. A solution contains H+ with the concentration of 3.4 * 10exp-6, this solution is

    5. Your answer:
    neutral
    basic
    none of these answers
    acidic

  5. A solution contains OH- with the concentration of 4.5 * 10exp-6 M, what is the pH of this solution? Kw = 1* 10exp-14

    6. Your answer:
    11.2
    8.65
    2.22
    1.89

  6. The pH of a solution is 3.67, what is the [H+] of this solution?

    7. Your answer:
    3.2 * 10exp-7 M
    2.14*10exp-4 M
    2.14*10exp-4 moles
    1.1 *10exp-6 M

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