Question

A student combines 154 grams of carbon tetrachloride and an unknown quantity of bromine in a solid container to produce 243 grams of dibromo dichloromethane and 71 grams of chlorine. How much chlorine was used in the reaction, assuming the reactants are completely used up.

Answer 1

Answer:

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Answer 2

Answer:160g

Explanation: according to law of conservation of mass,

Mass of reactants = Mass of products — (1)

So, according to the question..

Mass of carbon tetrachloride= 154 grams

Mass of bromine = x

There fore , total mass of reactant = x+154

Mass of dibromodichlormethane = 243 grams

Mass of chlorine = 71 grams

There fore , total mass of product = 243+ 71 = 314 grams

So, according to equation (1) ,

x+154=243+71

x+154= 314

x=314-154

x=160 grams

Therefore; mass of bromine = 160 grams.

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