For polymerization of styrene in tetrahydrofuran at 25C using sodium naphthalide as initiator, the rate constant for propagation is 550 dm 3 mol -1 s...

For polymerization of styrene in tetrahydrofuran at 25C using sodium naphthalide as initiator, the rate constant for propagation is 550 dm3mol-1s-1. If the initial mass concentration of styrene is 156 g dm-3 and that of sodium naphthalide is3.02 x 10-2 g dm-3, calculate the initial rate of polymeriztion and, for complete conversion of the styrene, the number-average molar mass of the polystyrene formed.Comment upon the expected value of the polydispersity index ( Mw/Mn )