ICSE 2007 : SCIENCE Paper 2 (Chemistry) - Question 7 (a) Numerical problem.

SCIENCE
Paper 2 (Chemistry) - 2007
(One hour and a half)

Question 7
(a) A compound X consists of 4.8% carbon and 95.2% bromine by mass.

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1.
(i) Determine the empirical formula of this compound working correct to one decimal place (C = 12; Br = 80).

2.
(ii) If the vapour density of the compound is 252, what is the molecular formula of the compound?

3.
(iii) Name the type of chemical reaction by which X can be prepared from ethane.

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