A. C2H2
B. C3H3
C. C4H4
D. C5H5
Correct Answer:
Option A – C2H2
Explanation
% of H2 = 100 – 92.3 = 7.7%
mole = 92.3/12; ⇔ 7.7/1
7.1/7.1; ⇔ 7.1/7.1
empirical formula = CH
(CH)n = 26
(12 + 1)n = 26
(13)n = 26
n = 26/13 = 2
molecular formula = C2H2
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