Itric acid is responsible for the tartness of citrus fruits, especially lemons and limes. what is the molecular formula for citric acid? how many lone pairs are present? draw a skeletal structure. how many sp2 hybridized carbons are present? what orbitals are used to form each indicated bond ([1]–[4])? ball and stick model of citric acidaccess the text alternative for ball and stick model of citric acid graphic. page 53 1.41 zingerone gives ginger its pungent taste. what is the molecular formula for zingerone? how many lone pairs are present? draw a skeletal structure. how many sp2 hybridized carbons are present? what orbitals are used to form each indicated bond ([1]–[4])? ball and stick model of zingeroneaccess the text alternative for ball and stick model of zingerone graphic.