If you don't know if the unknown acid was monoprotic, diprotic, or triprotic, you cannot determine molarity of the acid.
Assuming monoprotic (as in acetic acid, hydrochloric, nitric, citric)
Macid*Vacid=Mbase*Vbase
Macid=2M*60ml/20ml=6M
Normally, you should solve these equations using Normality as the concentration, but I suspect your teacher has not exposed you to that yet.
http://environmentalchemistry.com/yogi/chemistry/MolarityMolalityNormality.html
If 20.0mL of an unknown acid was titrated with 2.0 M KOH and 60.0 mL KOH was used what is the molarity of the unknown acid?
1 answer
1 answer