a 250 mg sample of an organic weak acid was dissolved in an appropriate solvent and titrated with 0.0556 M NaOH, requiring 32.58 ml to reach the endpoint. determine the compound's equivalent weight.

Question

cuanchi · Answer

1. calculate how many moles of NaOH has been used to reach the endpoint.
moles=volume in L x molarity
That is going to be the same number of moles that you have of the acid in the mass of the acid (250mg)
2. calculate the Molecular mass of the acid 
MM = mass/number of moles