Chemistry
The empirical formula of a hydrocarbon is C2H3. The hydrocarbon has a relative molecular mass of 54. (At wt: H = 1, C = 12)
(a) What is the molecular formula of the hydrocarbon?
(b) Draw the structural formula of the hydrocarbon.
(c) Give the general formula of the hydrocarbon.
Stoichiometry
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Answer
(a) Empirical formula = C2H3
Relative molecular mass = 54
∴ Molecular formula = n[E.F.] = 2[C2H3] = C4H6
(b) The structural formula of butyne is shown below:
(c) The hydrocarbon C4H6 is an alkyne, and the general formula for alkyne is CnH2n-2.
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