A 28.00 sample of an unknown H3PO4 solution is titrated with a 0.130M NaOH solut

Question

A 28.00 sample of an unknown H3PO4 solution is titrated with a 0.130M NaOH solution. The equivalence point is reached when 25.38ml of NaOH solution is added.
What is the concentration of the unknown H3PO4 solution? The neutralization reaction is:

A 28.00 sample of an unknown H3PO4 solution is titrated with a 0.130M NaOH solution. The equivalence point is reached when 25.38ml of NaOH solution is added. What is the concentration of the unknown H3PO4 solution? The neutralization reaction is: H3PO4(aq) 3NaOH(aq) rightarrow 3 H2O(l) Na3PO4(aq)

Explanation / Answer

M1V1 = M2V2 3 x M1 x 28 = 0.13 x 25.38 M1 = 0.039 M

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