Chem 120 final exam questions With Complete Solution

What is the correct order of melting points for the following alkanes, from highest to lowest temperature? correct answer: heptane hexane ethane methane 2. Given an alkane that contains 25 carbon atoms. How many hydrogen atoms are present in its structure? a) correct answer: ) 52 3. Which of the following properly describes constitutional (structural) isomers? correct answer: compounds with the same molecular formula, but a different order of attachment of atoms 4. How many secondary and tertiary carbons, respectively, are in the following compound? correct answer: ) 2, 3 5. What is the molecular formula and name of the following compound? correct answer: C4H9Cl, 2-chlorobutane 6. What is the IUPAC name of the compound below? correct answer: methylcyclohexane which reaction type is most characteristic of alkenes? correct answer: addition what is the IUPAC name for the compound below? correct answer: trans- 2, 3- dichlorvos-2-pentene what is the structure and name of the product of the following reaction? correct answer: ch3ch2ch2ch3, butane alkanes and alkenes are no polar compounds and hence have poor solubility in water correct answer: true carbon monoxide may be produced in the incomplete combustions of methane. correct answer: true The names ortho- dimethylbenzene and 1,4- dimethylbenzene represent the same compound correct answer: false if a compound's name ends with " diene", this suggest that is it an alkene containing two double bonds in its structure correct answer: true what is the oxidation of a primary alcohol correct answer: aldehyde which of the following alcohol is tertiary alcohol? correct answer: 2- methyl- 2- butanol what compound is produced when 2 methyl-3 pentanol is oxidized ? correct answer: 2 methyl- 3 pentanone what class of compounds is represented by the general formula R-O-R correct answer: ethers which of the following compounds will give a silver mirror finish when treated with tollens' reagent ? correct answer: butanal