An unknown acid contains carbon, hydrogen, and oxygen. When a 10.46mg sample was burned in oxygen it gave 22.17mg of carbon dioxide and 3.40mg of water. The molecular mass was determined to be 166g/mol. When a .1680g sample of this acid was titrated with 0.1250 M NaOH, the end point was reached after 16.18mL of base had been added. What is the empirical formula? What is the molecular formula? Is the acid mono-,di-, or triprotic?

Question

An unknown acid contains carbon, hydrogen, and oxygen.  When a 10.46mg sample was burned in oxygen it gave 22.17mg of carbon dioxide and 3.40mg of water.  The molecular mass was determined to be 166g/mol.  When a .1680g sample of this acid was titrated with 0.1250 M NaOH, the end point was reached after 16.18mL of base had been added.  What is the empirical formula?  What is the molecular formula? Is the acid mono-,di-, or triprotic?

kira_yamato · Answer

First you would need to figure out the number of moles of CO2 and acid.

kira_yamato · Answer

attachment