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Homework Help: Strengths of Acids Problem

  1. Apr 14, 2008 #1
    1. The problem statement, all variables and given/known data
    What mass of sodium bicitrate would be needed to prepare a 1.00 L solution with a pH of 5.42?

    2. Relevant equations

    3. The attempt at a solution
    First of all, I don't know what sodium bicitrate is, so I can't write the equation for it. What's bicitrate?

    I wanted write the equilibrium expression for Ka. But I can only find the concentration of the [H30+] and not anything else... I have no idea how to do this question. Help please?
  2. jcsd
  3. Apr 15, 2008 #2
    if pH = 5.42, what is pOH equal to?

    then [OH-] = 10^-pOH
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