Ask Question
9 September, 09:30

Which of these substances has the lowest pH? 0.5 M HBr, pOH = 13.5 0.05 M HCl, pOH = 12.7 0.005 M KOH, pOH = 2.3

+3
Answers (2)
  1. 9 September, 09:53
    0
    Answer;

    0.5 M HBr, pOH = 13.5; Has the lowest pH

    Explanation;

    From the question;

    pH = - Log [OH]

    or pH = 14 - pOH

    Therefore;

    For 0.5 M HBr

    [H+] = 0.5 M

    pH = - Log [0.5]

    = 0.30

    For; pOH = 13.5

    pH = 14 - pOH

    = 14 - 13.5

    = 0.5

    For; 0.05 M HCl

    pH = - log [H+]

    [H+] = 0.05

    pH = - Log [0.05]

    = 1.30

    For; pOH = 12.7

    pH = 14 - pOH

    = 14 - 12.7

    = 1.30

    For; 0.005 M KOH,

    pOH = - log [OH]

    [OH-] = 0.005

    pOH = - Log 0.005

    = 2.30

    pH = 14 - 2.30

    = 11.7

    For; pOH = 2.3

    pH = 14 - pOH

    = 14 - 2.3

    = 11.7
  2. 9 September, 10:20
    0
    0.5 M HBr, pOH = 13.5

    Explanation:

    edg
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Which of these substances has the lowest pH? 0.5 M HBr, pOH = 13.5 0.05 M HCl, pOH = 12.7 0.005 M KOH, pOH = 2.3 ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers