Complete and balance the equation for the single-displacement reaction.

Question

balanced equation: Cl2 + NaBr ------>

Answer 1

The Chlorine will take the place of the Bromine in NaBr since they are both in the halogen group of the periodic table and form negative ions when in solution. In general, negative ions will replace negative ions and positive ions will replace positive ions. Chlorine is closer to the top of the periodic table compared to Bromine which means it is more reactive than Bromine and is able to overpower it to replace. When Chlorine replaces Bromine, the Bromine is now by itself where it takes the form of Br2 (di-atomic). Bromine becomes di-atomic when by itself. Other diatomic elements include Iodine, Nitrogen, Chlorine, Hydrogen, Oxygen, Fluorine. The balanced equation can be seen below:

Cl2 + 2NaBr --> 2NaCl + Br2