Concept explainers
Interpretation: The meaning of
Concept introduction: The cyclic
All the carbon atoms and
To determine: The meaning of aromatic hydrocarbons; justification for benzene exhibiting resonance; bond angles in benzene and the description of the bonding in benzene; and the reason for the difference in the delocalization of
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Chemistry: An Atoms First Approach
- What are aromatic hydrocarbons? Benzene exhibits resonance. Explain. What are the bond angles in benzene? Give a detailed description of the bonding in benzene. The electrons in benzene are delocalized, while the electrons in simple alkenes and alkynes are localized. Explain the difference.arrow_forwardWrite the structural formula for propylene glycol, 1,2-propanediol. Why is it classified as an alcohol? Is it a polar molecule? Should it be miscible with water?arrow_forwardFill out the table with correct answers. This is all about Hydrocarbons and Functional Groups Chemistry. The most interesting Functional Group Why is it more interesting than other Functional Group(Ethers, Aldehydes and ketones, carboxylic acids,esters and amines) Give a sample structure of your chosen functional compound Give its Special Properties and Common Uses Name Products or things in which this Functional Group is present Alcohols-(R-OH; R=hydrocarbon)arrow_forward
- The average bond enthalpy for C-His 413 kJ/mol. 413 kJ of energy is required to break a mole of CH into atoms: CH(g)→C(g) + H(g), AH=413 kJ Using this information, and your answer from Part A, calculate the enthalpy change of the reaction from Part B. That is, calculate the energy required to break only the carbon-carbon bonds in benzene. Express your answer to four significant figures and include the appropriate units. > View Available Hint(s) HA AHrxn = Value Units Submit Part D Complete previous part(s) Next > Provide Feedback 9:33 PM B. W Word Google .. Spotify .. 61°F 11/17/2021arrow_forwardWhich of the compounds, ethanol, C2H6O, or methanol, CH3OH, should have the higher boiling point? Why? How would the boiling point change if the atmospheric pressure increased or decreased? What is the effect of small amount of impurity on the boiling point of an organic compound? List five physical properties of organic compounds that are often measured by organic chemists.arrow_forwardThe functional group R carboxylic acid anhydrides. esters. aldehydes. ketones. amides. carboxylic acids. -0-C-R is characteristic ofarrow_forward
- 8 What type of organic molecule is this? ОН ketone alcohol aldehyde O organic acidarrow_forwardGasohol is a mixture of 90% gasoline and 10% ethanol, CH 3CH 2OH. Ethanol is considered an environmentally friendly fuel additive because it can be made from a renewable source—sugarcane. Ethanol burns in air to form CO 2 and H 2O, and, like the combustion of alkanes, this reaction also releases a great deal of energy. Write a balanced equation for the combustion of ethanol.arrow_forwardConsider the complete combustion of octane. Calculate the bond energies (in kJ/mol) for the:Combustion of methane CH4(g)+2O2(g)→CO2(g)+2H2O(g)a. bonds brokenb. bonds formedc. overall reactionarrow_forward
- 1. Which of the following formulas is incorrect?a. CaNO3b. MgSc. AlBr3d. Li2Oe. NaOH 2. Part of an organic molecule where most of its chemical reactions occur.a. Substrateb. Productc. Reactantsd. Functional Group 3. An acyclic unsaturated hydrocarbon that contains one or more carbon-carbon triple bonds. As the family name alkyne indicates the characteristics ending associated with a triple bond. It has a general formula of one triple bond is CnH2n-2.a. Alkenesb. Alkynesc. Aromatic compoundd. Cycloalkanearrow_forwardExplain Properties of Alkynes ?arrow_forwardIndicate whether each molecule is an aliphatic or an aromatic hydrocarbon. If it is aliphatic, identify the molecule as an alkane, an alkene, or an alkyne. Separate your answer with a dash. Example. ALIPHATIC HYDROCARBON-CYCLOALKANE * H H H. TH. Harrow_forward
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