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chemistry help!?

A 28.00 mL sample of an unknown H3PO4 solution is titrated with a 0.130 M NaOH solution. The equivalence point is reached when 26.13 mL of NaOH solution is added.

The neutralization reaction is

H3PO4(aq)+3NaOH(aq)→3H2O(l)+Na3PO4(aq)

What is the concentration of the unknown H3PO4 solution?

2 Answers

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  • 3 months ago

    (0.130 M NaOH) x (26.13 mL) x (1 mol H3PO4 / 3 mol NaOH) / (28.00 mL) =

    0.0404 M H3PO4

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  • Anonymous
    3 months ago

    0.0404 M                           

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