1.513g of monoprotic acid (HX) is dissolved in water, and the volume is 250.0 ml after the dissolving. The solution was then titrated 38.12g of .100 M NaOH to reach the end point of the titration. What is the molecular weight of HX?

Question

1.513g of monoprotic acid (HX) is dissolved in water, and the volume is 250.0 ml after the dissolving. The solution was then titrated  38.12g of .100 M NaOH to reach the end point of the titration. What is the molecular weight of HX?

DrBob222 · Answer

I assume you meant 38.12 mL and not g. mols NaOH = M x L = ? mols monoprotic HA = same. M HA = mols HA/L HA mol HA = grams/molar mass. You have mols and grams, solve for molar mass.