WAEC Chemistry 2015 Theory — Question 26

Question 26 of 49 from the West African Examinations Council (WAEC) Chemistry 2015 Theory paper, with the correct answer and a full explanation.

3(c)(i). Write a balanced equation for the reaction between ethyne and excess bromine.

Model answer

C₂H₂ + 2Br₂ → C₂H₂Br₄ (since ethyne is present in excess bromine, only one mole of ethyne is needed to fully react with the bromine, giving the tetrabromo product).

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