Q.

A polystyrene, having formula [Br3C6H3C8H8]n , was prepared by heating styrene with tribromo benzoyl peroxide in the absence of air. If it was found to contain 10.46% bromine by weight, find the value of n.

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answer is 000019.

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Detailed Solution

Let the weight of polystyrene prepared be 100 gramTherefore number of moles of Br in 100 gram of polystyrene =10.4680From the formula of polystyrene, we have, Number of moles of Br=3× mole of [Br3C6H3C8H8]n
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