Explanation 1) Concept: In linear alkanes, the carbon atoms are bonded together in one continuous chain. Linear alkane chains have a methyl group at each end with methylene groups connecting them. In branched alkanes, the molecular structure contains a main chain (the longest carbon chain) and at least one side chain. Empirical formula is the chemical formula derived from a molecular formula, in which the subscripts represent the simplest whole number ratio of the atoms or ions in the compound. It is given that both linear and branched chain alkane contain the same number of carbon atoms. If they both have the same number of carbon atoms, then they are supposed to have the same molecular formula. The molecular formula of the alkane is calculated using the number of carbon atoms in it ( C n H 2 n + 2 ) , where the subscript n represents number of carbon atoms in an alkane. Since both contain the same number of carbon atoms, it implies that they would contain the same number of hydrogen atoms too. If both of the compounds possess the same molecular formula, then it implies that they must possess the same empirical formula as well. Let’s prove this by taking an example. 2) Formula General formula for alkanes is C n H 2 n + 2 3) Given: Linear and branched chain alkanes with the same number of carbon atoms. 4) Calculations: Let’s take an example of butane as a linear alkane and 2-methyl propane as a branched alkane, both containing 4 carbon atoms. Using the general formula for the alkane, let’s calculate the number of hydrogen atoms in both since both have the same number of carbon atoms, i.e., 4

Chemistry: An Atoms-Focused Approach (Second Edition)

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If linear and branched alkanes with the same number of carbon atoms all have the same empirical formula.

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Chemistry: An Atoms-Focused Approach (Second Edition)

Ch. 19 - Prob. 19.1VP Ch. 19 - Prob. 19.2VP Ch. 19 - Prob. 19.3VP Ch. 19 - Prob. 19.4VP Ch. 19 - Prob. 19.5VP Ch. 19 - Prob. 19.6VP Ch. 19 - Prob. 19.7VP Ch. 19 - Prob. 19.8VP Ch. 19 - Prob. 19.9VP Ch. 19 - Prob. 19.10VP

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If linear and branched alkanes with the same number of carbon atoms all have the same empirical formula.

To explain: If linear and branched alkanes with the same number of carbon atoms all have the same empirical formula.

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Chapter 19 Solutions

To explain:

If linear and branched alkanes with the same number of carbon atoms all have the same empirical formula.