Question

can anyone explain and answer 5 and 6 please

4. Which of the following properties is typical of octane? a) It is a gas at room temperature b) It is soluble in hexane c) It is soluble in water d) It has a density of about 1.5 g/mL e) It is a liquid due to dipole-dipole interactions 5. Which of the following has the lowest boiling point? a)2-methylhexane b) 2,3-dimethylbutane c) octane d) 2,3,4-trimethylpentane e) 2,3,4,5-tetramethylhexane 6. Which of the following structures does NOT have isomers with respect to the double нас WC at 0 nethyl ether o

Answer 1

* t of Alkanes is directly proportional to the number of carbon atoms in molecule. In case of isomers, more branching will have lower Boiling point. a) 2-methyhexane 7 carbon atoms b) 2,3-dimethyl butane 16 Carbon atours Lowest BP c) Octane M 8 & carbon atoms carbon atoms d) 2, 3, 4-trimethyl pentane 8 Cabon atoms e) 2, 3, 4, 5- tetramethyl hexane lo carbon atoms Structure (b) have no because Carbon atom Substituents. isomers with respect to = 'boud. forming double bond has sane * same for isomerism a double bond asb should not be same. orc sd should not Td be same. But afc orasdor b s c of bed can be same.