AP chemistry 2006 Form A Questions

  1. 1. The problem statement, all variables and given/known data
    I'm doing #5 in this Ap Chemistry 2006 Form A Free Response Questions. Here's the link http://www.collegeboard.com/prod_downloads/student/testing/ap/chemistry/_ap06_frq_chemistry.pdf

    2. Relevant equations

    3. The attempt at a solution

    I think i got the first 3 parts right. Here's what i came up with.

    a. X = Na2CO3
    Y = KCl
    Z = MgSO4

    b. OH- + Mg+2 -> Mg(OH)2

    c. X has a PH greater than 7 because the its solution contains OH-
  2. jcsd
  3. chemisttree

    chemisttree 3,717
    Science Advisor
    Homework Helper
    Gold Member

    Answers look good except for 'c'. The answer is not false but is not the answer to the question asked. The presence of OH- must be backed up by more information, especially a reaction indicating where the OH- came from.
  4. I got it figured out already. Thanks anyway. Please close this thread if you don't mind :)
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