Calculate mw of unknown using titration

[kthejohnster]

Homework Statement

Calculate the molecular weight of unknown acid by titrating with 2N H2PO4 and 2N NaOH

Homework Equations

ph = pka + log[a-]/[ha]

The Attempt at a Solution

So i graphed titration with both acid and base with equivalents used vs ph, how would i use the number of equivalents (and total number of inflections in curve) to get molecular weight?

 

[AGNuke]

Convert Normality to Molarity.

 

[Borek]

Calculate the molecular weight of unknown acid by titrating with 2N H2PO4 and 2N NaOH

Not enough data. Please explain what the question is and what is the data that you are given. Or are you asked to design a procedure for determining molar mass of the acid?