Tashin hankali na molar, wanda kuma aka sani da molarity, shine ma'auni na tattarawar abu a cikin bayani. An bayyana shi azaman adadin moles na solute kowace lita na bayani. An bayyana naúrar maida hankalin molar a matsayin "moles per liter" ko "M" a takaice.Misali, maganin da ke da ƙwayar molar 1 M yana ɗauke da mole guda na solute kowace lita na maganin. Hakazalika, bayani tare da ƙwayar ƙwanƙwasa na 0.5 M ya ƙunshi moles 0.5 na solute kowace lita na bayani. Molar maida hankali kalma ce da aka saba amfani da ita a cikin ilmin sunadarai don bayyana ma'auni na mafita, kuma yana da amfani musamman don ƙididdige stoichiometry da shirya hanyoyin magance sananniya.