The grey is the answer. Please thoroughly explain why. Thanks!

1) Suggest experimental means by which the rates of the following reactions could be monitored. Explain your answer. (i.e. think pressure, color, volume, light change) a) 2NaN3(s)2Na(s)+3N2(g): a change in pressure would result b) Cl2(g)+2Br(aq)Br2(aq)+2Cl(aq) a change in pressure(decrease) would result and a change in color, as bromine is brown c) C2H6(g)C2H4(g)+H2(g) a change in pressure would result d) H2(g)+I2(g)2HI(g) a change in color would result e) Aquatic plants also conduct photosynthesis. The reaction takes place in water. The CO2 is obtained from dissolved CO2 in the form of HCO3(aq). How could this reaction be monitored? 6CO2(g)+6H2O(l)C6H12O6(s)+6O2(g) a change in mass of the plant and increase in oxygen f) NO(g)+O3(g)NO2(g)+O2(g)+ hv - a change in light would result 1) Suggest experimental means by which the rates of the following reactions could be monitored. Explain your answer. (i.e. think pressure, color, volume, light change) a) 2NaN3(s)2Na(s)+3N2(g): a change in pressure would result b) Cl2(g)+2Br(aq)Br2(aq)+2Cl(aq) a change in pressure(decrease) would result and a change in color, as bromine is brown c) C2H6(g)C2H4(g)+H2(g) a change in pressure would result d) H2(g)+I2(g)2HI(g) a change in color would result e) Aquatic plants also conduct photosynthesis. The reaction takes place in water. The CO2 is obtained from dissolved CO2 in the form of HCO3(aq). How could this reaction be monitored? 6CO2(g)+6H2O(l)C6H12O6(s)+6O2(g) a change in mass of the plant and increase in oxygen f) NO(g)+O3(g)NO2(g)+O2(g)+ hv - a change in light would result