Explain why oxygen "likes" to form an O^2- ion. Why is it important to prevent having air bubbles in the column chromatography? How do hydrocarbons contribute to the formation of ozone in the atmosphere? Why does a racemic mixture not rotate the light?
Why does a racemic mixture not rotate the light? What is the disadvantage of crystallization over evaporation? Explain why alum crystals have to be washed with a 50:50 mixture of ethanol and water. Why does NH_3 have a lower boiling point than H_2O?