The compound with the molecular formula C₂H₆ belongs to which homologous series?
A. Alcohols
B. Alkynes
C. Alkenes
D. Alkanes
Answer: Option D
Solution (By JKExamLibrary)
C₂H₆ (ethane) follows the general formula CnH₂n+2 (n=2 gives C₂H₆), which is the formula for alkanes. Alkanes are saturated hydrocarbons with single bonds. Alkenes have CnH₂n (e.g., C₂H₄), alkynes CnH₂n-2 (e.g., C₂H₂), alcohols have –OH group. Ethane is a component of natural gas and is used to produce ethylene. Methane (CH₄) is the simplest alkane.
Explanation:
Detergents (e.g., sulfonates) do not precipitate with Ca²⁺/Mg²⁺, so they lather well in hard water. Soaps form insoluble scum. This is a major advantage.
Explanation:
Hydrogen peroxide decomposes into water and oxygen. A single reactant breaks down into two or more products, so it is a decomposition reaction. This particular reaction can be catalyzed by MnO₂ or light. It is also a disproportionation redox reaction where O in H₂O₂ (-1) goes to -2 in H₂O and 0 in O₂.
Explanation:
Methanol (CH₃OH) contains the hydroxyl (–OH) functional group characteristic of alcohols. It is the simplest alcohol, also called wood alcohol. Ethanol (C₂H₅OH) is the alcohol in beverages. Aldehydes have –CHO group, ketones have >C=O, carboxylic acids have –COOH. Methanol is toxic; ingestion can cause blindness or death. It is used as a solvent and in formaldehyde production.
No comments yet. Be the first to start the discussion!