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Chapter 24: Problem 26

Give the general formula for any cyclic alkene, that is, a cyclic hydrocarbon with one double bond.

Short Answer

Expert verified
The general formula for any cyclic alkene with one double bond is \(C_nH_{2n-2}\).

Step by step solution

01

Understand cyclic alkenes

A cyclic alkene is a hydrocarbon molecule with a ring structure, containing a double bond between two carbon atoms. Cyclic alkenes are unsaturated, meaning they have the ability to form more bonds with other atoms because of the presence of the double bond.
02

Identify hydrocarbon formula

A hydrocarbon is a compound that consists of only hydrogen and carbon atoms. The general formula of a hydrocarbon is C_nH_m, where n represents the number of carbon atoms and m represents the number of hydrogen atoms.
03

Determine general formula for cyclic alkene with one double bond

For a cyclic alkene with one double bond, we first need to determine the number of carbon atoms in the molecule. Each carbon atom in a cyclic alkene contributes two hydrogen atoms, except for the two carbon atoms with a double bond. These two carbon atoms, with the double bond, contribute one hydrogen atom each to the compound. To create a general formula, we can represent the number of carbon atoms by the variable n. For the hydrogen atoms in the molecule with no double bond, there are 2(n-2) hydrogen atoms, and for the hydrogen atoms in the two carbon atoms with a double bond, there are 2 hydrogen atoms. Adding these two terms together gives the total number of hydrogen atoms: 2(n-2) + 2.
04

Simplify general formula

Combining the expressions for carbon and hydrogen atoms from step 3, we obtain the general formula for a cyclic alkene with one double bond: C_nH_{2(n - 2) + 2} Simplifying the formula: C_nH_{2n - 4 + 2} C_nH_{2n - 2} So, the general formula for any cyclic alkene with one double bond is \(C_nH_{2n-2}\).

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Most popular questions from this chapter

Describe the intermediate that is thought to form in the addition of a hydrogen halide to an alkene, using cyclohexene as the alkene in your description.

(a) What is the empirical formula of cellulose? (b) What is the monomer that forms the basis of the cellulose polymer? (c) What bond connects the monomer units in cellulose: amide, acid, ether, ester, or alcohol?

Indicate whether each statement is true or false. (a) The sequence of amino acids in a protein, from the amine end to the acid end, is called the primary structure of the protein. (b) Alpha helix and beta sheet structures are examples of quaternary protein structure. (c) It is impossible for more than one protein to bind to another and make a higher order structure.

Write a chemical equation for the formation of methionyl-glycine from the constituent amino acids.

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