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Homework Help: Ph question

  1. Jun 18, 2009 #1
    A solution which is formed by combining 200. mL of 0.15 M HCl with 300. mL of 0.090 M NaOH has a pH of ____

    ive worked out concentration of H ion is 0.03 and the concentration of OH ions 0.027. but i dunno what to next?

    answer is 2.2 thanks
  2. jcsd
  3. Jun 19, 2009 #2


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    Hmmmm. pH = -log[H+]
  4. Jun 19, 2009 #3


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