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Calculate the molar mass of a diprotic acid.

It reaches the endpoint of the titration with NaOH at 28ml.
The initial concentration of NaOH is 0.09792. and the initial mass of the diprotic acid is 0.685g. I keep getting a molar mass of 500g/mol. but the options are all around 100-150.

  • Chemistry -

    I made a mistake. the initial concentration of NaOH is 1.0M.

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