Question:
The hydrocarbon with molecular formula $C_{20}H_{42}$
The hydrocarbon with molecular formula $C_{20}H_{42}$
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Remember prefixes: 10 → dec, 20 → eicos.
Updated On: Apr 24, 2026
- Didodecane
- Didecane
- Dodecane
- Didocene
- Eicosane
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The Correct Option is
Solution and Explanation
Concept:
General formula of alkanes:
\[
C_nH_{2n+2}
\]
Step 1: Compare formula.
\[ C_{20}H_{42} \Rightarrow 2n+2 = 42 \Rightarrow n=20 \]
Step 2: Identify name.
20 carbon alkane = Eicosane
Step 1: Compare formula.
\[ C_{20}H_{42} \Rightarrow 2n+2 = 42 \Rightarrow n=20 \]
Step 2: Identify name.
20 carbon alkane = Eicosane
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