Concept explainers
(a)
Interpretation:
Whether hydration of 2-butene will give one or two products has to be identified based on Markovnikov’s rule.
Concept Introduction:
In this reaction no atoms or group of atoms are removed. Instead the unsaturated bond is reduced to saturated bond. A general scheme for addition reaction of
Addition reactions can be classified broadly into two types. They are asymmetrical addition reaction and symmetrical addition reaction.
Symmetrical addition reactions is the one in which the same atom or same group of atoms are added across the carbon‑carbon multiple bonds.
Unsymmetrical addition reactions is the one in which the different atom or different group of atoms are added across the carbon‑carbon multiple bonds.
Markovnikov’s rule:
When an unsymmetrical molecule of formula HQ to an unsymmeterical alkene, the hydrogen atom from HQ gets attached to the unsaturated carbon atom which has the most hydrogen atoms. In other words, it can be said that the hydrogen atom gets attached to the unsaturated carbon atom that is least substituted.
(b)
Interpretation:
Whether hydration of 2-pentene will give one or two products has to be identified based on Markovnikov’s rule.
Concept Introduction:
Chemical reaction in which an atom or a group of atoms are added to each carbon atom of a carbon‑carbon multiple bond in a hydrocarbon or hydrocarbon derivative is known as addition reaction.
In this reaction no atoms or group of atoms are removed. Instead the unsaturated bond is reduced to saturated bond. A general scheme for addition reaction of alkene can be given as shown below,
Addition reactions can be classified broadly into two types. They are asymmetrical addition reaction and symmetrical addition reaction.
Symmetrical addition reactions is the one in which the same atom or same group of atoms are added across the carbon‑carbon multiple bonds.
Unsymmetrical addition reactions is the one in which the different atom or different group of atoms are added across the carbon‑carbon multiple bonds.
Markovnikov’s rule:
When an unsymmetrical molecule of formula HQ to an unsymmeterical alkene, the hydrogen atom from HQ gets attached to the unsaturated carbon atom which has the most hydrogen atoms. In other words, it can be said that the hydrogen atom gets attached to the unsaturated carbon atom that is least substituted.
(c)
Interpretation:
Whether hydration of cyclobutene will give one or two products has to be identified based on Markovnikov’s rule.
Concept Introduction:
Chemical reaction in which an atom or a group of atoms are added to each carbon atom of a carbon‑carbon multiple bond in a hydrocarbon or hydrocarbon derivative is known as addition reaction.
In this reaction no atoms or group of atoms are removed. Instead the unsaturated bond is reduced to saturated bond. A general scheme for addition reaction of alkene can be given as shown below,
Addition reactions can be classified broadly into two types. They are asymmetrical addition reaction and symmetrical addition reaction.
Symmetrical addition reactions is the one in which the same atom or same group of atoms are added across the carbon‑carbon multiple bonds.
Unsymmetrical addition reactions is the one in which the different atom or different group of atoms are added across the carbon‑carbon multiple bonds.
Markovnikov’s rule:
When an unsymmetrical molecule of formula HQ to an unsymmeterical alkene, the hydrogen atom from HQ gets attached to the unsaturated carbon atom which has the most hydrogen atoms. In other words, it can be said that the hydrogen atom gets attached to the unsaturated carbon atom that is least substituted.
(d)
Interpretation:
Whether hydration of cyclohexene will give one or two products has to be identified based on Markovnikov’s rule.
Concept Introduction:
Chemical reaction in which an atom or a group of atoms are added to each carbon atom of a carbon‑carbon multiple bond in a hydrocarbon or hydrocarbon derivative is known as addition reaction.
In this reaction no atoms or group of atoms are removed. Instead the unsaturated bond is reduced to saturated bond. A general scheme for addition reaction of alkene can be given as shown below,
Addition reactions can be classified broadly into two types. They are asymmetrical addition reaction and symmetrical addition reaction.
Symmetrical addition reactions is the one in which the same atom or same group of atoms are added across the carbon‑carbon multiple bonds.
Unsymmetrical addition reactions is the one in which the different atom or different group of atoms are added across the carbon‑carbon multiple bonds.
Markovnikov’s rule:
When an unsymmetrical molecule of formula HQ to an unsymmeterical alkene, the hydrogen atom from HQ gets attached to the unsaturated carbon atom which has the most hydrogen atoms. In other words, it can be said that the hydrogen atom gets attached to the unsaturated carbon atom that is least substituted.
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Chapter 13 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- Question 4 Determine the rate order and rate constant for sucrose hydrolysis. Time (hours) [C6H12O6] 0 0.501 0.500 0.451 1.00 0.404 1.50 0.363 3.00 0.267 First-order, k = 0.210 hour 1 First-order, k = 0.0912 hour 1 O Second-order, k = 0.590 M1 hour 1 O Zero-order, k = 0.0770 M/hour O Zero-order, k = 0.4896 M/hour O Second-order, k = 1.93 M-1-hour 1 10 ptsarrow_forwardDetermine the rate order and rate constant for sucrose hydrolysis. Time (hours) [C6H12O6] 0 0.501 0.500 0.451 1.00 0.404 1.50 0.363 3.00 0.267arrow_forwardDraw the products of the reaction shown below. Use wedge and dash bonds to indicate stereochemistry. Ignore inorganic byproducts. OSO4 (cat) (CH3)3COOH Select to Draw ઘarrow_forward
- Calculate the reaction rate for selenious acid, H2SeO3, if 0.1150 M I-1 decreases to 0.0770 M in 12.0 minutes. H2SeO3(aq) + 6I-1(aq) + 4H+1(aq) ⟶ Se(s) + 2I3-1(aq) + 3H2O(l)arrow_forwardProblem 5-31 Which of the following objects are chiral? (a) A basketball (d) A golf club (b) A fork (c) A wine glass (e) A spiral staircase (f) A snowflake Problem 5-32 Which of the following compounds are chiral? Draw them, and label the chirality centers. (a) 2,4-Dimethylheptane (b) 5-Ethyl-3,3-dimethylheptane (c) cis-1,4-Dichlorocyclohexane Problem 5-33 Draw chiral molecules that meet the following descriptions: (a) A chloroalkane, C5H11Cl (c) An alkene, C6H12 (b) An alcohol, C6H140 (d) An alkane, C8H18 Problem 5-36 Erythronolide B is the biological precursor of erythromycin, a broad-spectrum antibiotic. How H3C CH3 many chirality centers does erythronolide B have? OH Identify them. H3C -CH3 OH Erythronolide B H3C. H3C. OH OH CH3arrow_forwardPLEASE HELP! URGENT! PLEASE RESPOND!arrow_forward
- 2. Propose a mechanism for this reaction. ہلی سے ملی N H (excess)arrow_forwardSteps and explanationn please.arrow_forwardProblem 5-48 Assign R or S configurations to the chirality centers in ascorbic acid (vitamin C). OH H OH HO CH2OH Ascorbic acid O H Problem 5-49 Assign R or S stereochemistry to the chirality centers in the following Newman projections: H Cl H CH3 H3C. OH H3C (a) H H H3C (b) CH3 H Problem 5-52 Draw the meso form of each of the following molecules, and indicate the plane of symmetry in each: OH OH (a) CH3CHCH2CH2CHCH3 CH3 H3C. -OH (c) H3C CH3 (b) Problem 5-66 Assign R or S configurations to the chiral centers in cephalexin, trade-named Keflex, the most widely prescribed antibiotic in the United States. H2N H IHH S Cephalexin N. CH3 CO₂Harrow_forward
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