1. The following initial rate data were obtained for the reaction: a) (2 marks) Write down the rate law expression for this reaction (use the symbol k for the rate

constant).Show how you arrived at this equation. b) (1 mark) Calculate the rate constant for this reaction and present it with proper units. c) (2 marks) Provide one argument for and one argument against the hypothesis that the above reaction is an elementary reaction. 2 \mathrm{PH}_{3(g)}+B_{2} H_{6(g)} \rightarrow 2 P H_{3} B H_{3(g)}