Anonymous
Anonymous asked in Science & MathematicsChemistry · 1 month ago

What is the molarity of the acid?

An sample of HC1 of unknown concentration is brought to you for analysis. You titrate 10.00 ml of the acid to its endpoint with 23.56 ml of 0.100 M NaOH.  How did you get to your answer? Ty! 

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  • Dr W
    Lv 7
    1 month ago

    balanced rxn

    .. 1 HC1 + 1 NaOH ---> 1 NaCl + 1 H2O

    then

    .. 23.56 mL NaOH.... 0.100 mmol NaOH..  1 mmol HCl

     ----- ---- ---- ---- ---- x ---- ---- --- ---- --- --- x ----- ------ ----- = 0.236 M HCl

    .. 10.00mL HCl .. ... .... . .1 mL NaOH.. .. . 1 mmol NaOH

  • 1 month ago

    HCl + NaOH → NaCl + H2O  [balanced as written]

    (23.56 mL x 0.100 M NaOH) x (1 mol HCl / 1 mol NaOH) / (10.00 mL HCl) =

    0.2356 M HCl

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