The following data were obtained on the initial rates of reaction of a d-metal complex in aqueous solution. For the experiments a.  [Y] = 2.7 mmol/dm3, and for experiments b. [Y] = 6.1 mmol/dm3 Conc. complex/(mmol dm-3) 8.01 9.22 12.11 Exp. a.  v/ (mol dm-3 s-1) 125 144 190 Exp. b.   v/ (mol dm-3 s-1) 640 730 960   (a) What is the order of reaction with respect to the complex AND the reactant Y. Choose one.

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