2. Bromine can be obtained from the decomposition of calcium bromide by means of electrolysis. If 10.0 g of calcium bromide are dissolved in water before electrolysis and if 1.75

L of gaseous bromine is produced at 70 °C and 80 kPa, what is the theoretical yield percentage? 5 marks \mathrm{CaBr}_{2} \rightarrow \mathrm{Ca}+\mathrm{Br}_{2}