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  1. sergey_le

    Common ion in solution

    my approach is wrong or the one in the lasts year lab report?
  2. sergey_le

    Common ion in solution

    Summary:: finding concetrations [Thread moved from the technical forums] i did a lab experiment and i'm a little confused about what i should do. i got a solution of CaCl(2) 1.5 gr and Ca(OH)2 5gr in 100ml that i prepared 2 weeks ahead . after filttering the solution i got a saturated...
  3. sergey_le

    Calculations involving acids and bases

    i found the pka=4.8 so the ka is 1.58*10^-5. i guess the big issue i have is understanding what equation i should use. i attached what idid so far ,can you give it a look and tell me where i am wrong?
  4. sergey_le

    Calculations involving acids and bases

    Summary:: finding ml of two solutions by the final pH i have a NaOAc 0.1M and HOAc 0.1M , together the volume of the solutions is 20ml and the pH is 4. I need to find the volume of each solution. I've tried to solve it for hours with no successes. i found the H+ concentration (-log(h)=4 ), it...
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