6 pts) 20. Determine the rate law for the reaction below given the experimental data. 2NO(g) + 02(g) â 2 NO2(g) Exp. NO 0.0125 0.0250 0.0125 Ol 0.0253 0.0253 0.0506 0.0281 0.112 0.0562 Hydrogen iodide decomposes slowly to hydrogen and iodine at 600K. The reaction is second order in HI and the rate constant is 9.7x 10-6 M-s. If the initial concentration of HI is 0.100 M, how many hours will it take for the HI concentration to reach a value of 0.020 M? (6 pts) 21. (8 pts) 22. When 6 g of granulated zinc is added to a solution of 2 M HCI in a beaker at room temperature, hydrogen gas is generated. For each of the following changes (at constant volume of the acid) state whether the rate of hydrogen gas evolution will be increased, decreased, or unchanged a. 6 g of powdered Zn is used b. 4 g of granulated Zn is used c. 4 M HCl is used instead of 2 M HC d. temperature is raised to 40°C