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Question
What would you see when ethyne is bubbled through a solution of bromine in carbon tetrachloride?
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Solution
When ethyne is bubbled through a solution of bromine in carbon tetrachloride, the orange colour of bromine disappears due to the formation of a colourless product.
\[\ce{C2H2 + Br2 -> C2H2Br2 + Br2 -> C2H2Br4}\]
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\[\begin{array}{cc}
\ce{H}\phantom{...}\ce{Cl}\phantom{..}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
|\phantom{....}|\phantom{....}|\phantom{....}|\phantom{....}|\\
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|\phantom{....}|\phantom{....}|\phantom{....}|\phantom{....}|\\
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{Cl}\phantom{..}\ce{H}\phantom{...}\ce{H}\end{array}\]
