Prajogo Atmaja Prajogo Atmaja. Share. Relevance. A) CH4 B) C4H10 C) C12H26 D) C23H48? Why? than alkanes with odd number carbon atoms because former exist in close pack in its crystal lattice. The boiling point of straight-chain alkanes increases within its homologous series (meaning methane has a lower boiling point than ethane, which is lower than propane, etc). Each alkene has 2 fewer electrons than the alkane with the same number of carbons. As a rule of thumb, the boiling point rises 20–30 °C for each carbon added to the chain; this rule applies to other homologous series. What rules can be applied to make these choices? Cycloalkanes consist of carbon and hydrogen atoms that are saturated because of the single carbon-carbon bond (meaning that no more hydrogen atoms … With the increase in the number of carbon atoms, the molecular mass and also the molecular size increases. D) more than one correct response E) no correct response 1-Chloropentane is a straight-chain isomer. Which one of the following compounds has the lowest boiling point? This results in the increase in the magnitude of van der Waals’ forces … A branched alkane is more compact and has a smaller surface area than a normal alkane. C) 2, 2, 3, 3-tetramethyl butane done clear. because alkanes area arranged in the shape of zig zag way as the teeth of axe. 10. B. n-pentane. Hence it has the highest boiling point among all the isomers. 2 Answers. Methane and ethanoic acid are belongs to two types of organic compounds and according to the type of type, there is a considerable boiling point … 2-Methylpentane has highest boiling point because it has the least branched chain structure as compared to 2, 3-Dimethylbutane. 2 - Methyl pentane has the highest boiling point because the boiling point in alkane depends upon the chains of atoms and the molecular mass of the molecules. Answer. 1)generally even membered alkanes have higher b.p. B) n-octane done clear. Table 3.5.1 describes some of the properties of some straight-chain alkanes.. While 1 … The only attractions involved are Van der Waals dispersion forces, and these depend on the shape of the molecule and the number of electrons it contains. Introduction. C. isopentane. Alcohol, due to strongest intermolecular forces of attraction between molecules. CH3CH2CH2CH2CH2CH3. Which of the following has the highest boiling point [DPMT 1986] A) Neopentane done clear. Van der Waals dispersion forces are smaller for shorter molecules and only operate over very short distances between one molecule and its neighbors. What effect does branching of an alkane chain has on its melting point ? Relevance. Consider the following two isomers of C 5 H 11 Cl Among isomeric alkyl halides, the boiling point decreases with an increase in branching in the alkyl group. It is all just gibberish to me. Part (i): 2,2,4-trimethylpentane < 2-methylheptane < octane > These are all alkanes, so their boiling points will depend on the relative strengths of the London dispersion forces among the molecules. so the alkane … Cracking is used to convert long alkanes into shorter, more useful hydrocarbons. And why? - 798620 Eliyen4180 Eliyen4180 02.08.2017 Science Junior High School Which alkane will most likely have a very low boiling point? 10 years ago. Where you have isomers, the more branched the chain, the lower the boiling point tends to be. View Solution play_arrow; question_answer64) Aqueous solution of the following … C) C12H26 . C4H1o 5. WHICH ALKANE HAS THE HIGHEST BOILING POINT? it involves a free radical mechanism it takes place at high temperatures and pressures it involves heterolytic fission. In each case, the alkene has a boiling point which is a small number of degrees lower than the corresponding alkane. There is not a significant electronegativity difference between carbon and hydrogen, thus, there is not any significant bond polarity. Gaurang Tandon. 19. Alkanes, alkenes, or alkynes? asked Apr 12 '15 at 14:06. my answer may be use ful to u.if found any thing is incorrect then please inform me. (highest boiling pt) methane > heptane > hexane > decane (lowest boiling pt) (highest boiling pt) decane > heptane > hexane > methane (lowest boiling pt) (highest boiling pt) decane > hexane > heptane > methane (lowest boiling pt) (highest boiling pt) heptane > hexane > decane … A. n-butane. 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