Unit-14 Hydrocarbons
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Unit-14 Hydrocarbons
Answer: Hydrocarbons are organic compounds made up of only carbon and hydrogen atoms.
Answer: Methane (CH4) is a hydrocarbon; the others contain oxygen or nitrogen.
Answer: Alkanes follow the general formula CnH2n+2, e.g., methane CH4.
Answer: Methane, the simplest alkane, has the molecular formula CH4.
Answer: Ethane is the second alkane with formula C2H6.
Answer: Propane has three carbons and follows CnH2n+2, giving C3H8.
Answer: Butane has four carbons; CnH2n+2 gives C4H10.
Answer: C2H6 corresponds to ethane.
Answer: Propane is C3H8, so it has 8 hydrogen atoms.
Answer: Homologous series members differ by a CH2 group, e.g., CH4, C2H6, C3H8.
Answer: Paraffin comes from Latin parum affinis meaning little affinity for other substances.
Answer: Alkenes contain at least one carbon-carbon double bond.
Answer: Alkenes follow the general formula CnH2n, e.g., ethene C2H4.
Answer: Ethene is the simplest alkene with the formula C2H4.
Answer: Ethene (C2H4) is the simplest member of the alkene series.
Answer: C2H4 (ethene) contains a double bond and is therefore unsaturated.
Answer: Alkenes are commonly called olefins.
Answer: Propene follows CnH2n with n=3, giving C3H6.
Answer: A double bond consists of one sigma and one pi bond.
Answer: Alkene double-bond carbons are sp2 hybridized with a trigonal planar shape.