A) \[{{C}_{5}}{{H}_{4}}\]
B) \[{{C}_{10}}{{H}_{8}}\]
C) \[{{C}_{15}}{{H}_{12}}\]
D) \[{{C}_{20}}{{H}_{16}}\]
E) \[{{C}_{15}}{{H}_{20}}\]
Correct Answer: C
Solution :
Empirical formula \[({{C}_{5}}{{H}_{4}})+{{H}_{2}}S{{O}_{4}}\to \]Monosulphonic acid 0.104 g of acid required 10 mL of \[\frac{N}{20}NaOH\] for completely neutralization \[\frac{0.104}{n(5\times 12+4\times 1)}=\frac{1}{20}\times 10\times {{10}^{-3}}\] \[n=\frac{104}{32}=3.25\approx 3\] The molecular formula of hydrocarbon will be C is\[{{C}_{15}}{{H}_{12}}\].
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