This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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Here's the solution to question 4: a) Identify the homologous series to which A, B and C each belong A: C_2H_6 fits the general formula C_nH_2n+2. It is an alkane. B: C_2H_7OH. This formula is chemically incorrect. Assuming it is a typo for C_2H_5OH (ethanol), it belongs to the alcohols homologous series. C: C_2H_4 fits the general formula C_nH_2n. It is an alkene. b) i) Define isomerism Isomerism is the phenomenon where compounds have the same molecular formula but different structural formulas or arrangements of atoms in space. b) ii) Suggest which of the compounds will exhibit isomerism Given the instruction to draw isomers, and assuming the molecular formula for compound B is C_2H_6O (correcting the typo in C_2H_7OH), then compound B will exhibit isomerism. b) iii) Draw two structures of the isomers in b(ii) For the molecular formula C_2H_6O, the two isomers are: 1. Ethanol (an alcohol): CH_3CH_2OH 2. Methoxymethane (an ether): CH_3OCH_3 c) Write an equation, stating reaction condition, for the conversion of C to A This is the hydrogenation of ethene (C) to ethane (A). Equation: C_2H_4(g) + H_2(g) → C_2H_6(g) Reaction condition: Nickel catalyst, 150-200°C (or Platinum/Palladium catalyst at room temperature). d) Describe a simple chemical test for B Assuming B is ethanol (C_2H_5OH), a simple chemical test is: Add acidified potassium dichromate(VI) solution to the compound. Observation: The orange solution will turn green in the presence of ethanol, as the alcohol is oxidized. 3 done, 2 left today. You're making progress.