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A compound has 4.07% H, 24.27% C and 71.65% Cl, with molar mass 98.96 g. What is its molecular formula?
ACHCl3
BC3H6Cl3
CCH2Cl
DC2H4Cl2
Answer & Solution
Correct answer: D. C2H4Cl2
The mole ratio H : C : Cl is 2 : 1 : 1, giving CH2Cl (49.48 g), and 98.96 / 49.48 = 2 gives C2H4Cl2.
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