If an acid sample of mass 0.730g required 32.50 mL of 0.09486 M NaOH to neutralize where 1.05 mL of 0.1015 M HCl was used to back titrate, find the equivalent mass of the unknown solid acid in grams per mole of H+.

Question

preetha · Answer

So the NaOH added was too much. Calculate thenumber of moles of HCL added.  Calculate thenumber of moles of NaOH added.  Subtract the number of moles of HCl from NaOH.  What is left is the number of moles of the acid.  Using the mass and the number of moles, calculate the molar mass.