Rank the following alkyl residues in order of increasing stability (least < < < greatest).
Comprehension
Predict the acidity order for the three phenols shown below: Acidity order: 1 (most) to 3 (least). In the box below each formula, write a number (1 to 4) that represents the order of basic strength. For the two sets of acids shown below, rank their acidity from most acidic to least acidic.
In the box below each formula, enter a number (1 to 4) that indicates the order of acid strength (1 being the strongest and 4 being the weakest). In the two questions below, you must rank the relative strengths of the acids and bases shown. The answer to each is a number to be entered in the appropriate answer box. iii) Number of sp carbons : Number of sp carbons : Number of sp carbons : ... iv) Number of carbon-carbon Number of carbon-carbon Number of carbon-carbon s -bonds : .. v) Number of p-bonds to Number of p-bonds to Number p-bonds to carbon : .. iii) Number of sp carbons : Number of sp carbons : Number of sp carbons : ... iv) Number of carbon-carbon Number of carbon-carbon Number of carbon-carbon O.
Match the column (I) and (II). (Matrix)
Match the column (I) and (II)
The junctures centred on atoms A, B and C on the given structure
Select the most stable structure in each of the following Part (A)
Match the column I and II. (Matrix)
Identify the most stable structure in each of the following : Part (A)
Identify the most basic compound in the following
Match the column I and II. (Matrix)
Match the column I and II
Match the column I and II
What is the critical HOMO (nucleophile) in this reaction. a) non-bonding orbital on boron (b)s orbital of acetone.
Match the column. (Matrix)
Identify the following solvents as polar protic (PP), polar aprotic (PA), nonpolar protic (NPP), or nonpolar aprotic (NPA). Explain why A has a lower boiling point than B. Arrange the protons shown in descending order of their approximate binding energies.
Rank the following carbocations in order of stability (1 = most stable)
Consider the molecule shown below and answer in terms of Ha¾®He. Compounds) (Double bond equivalent value). The sum of the functional group types and the DBE value for the given compound is X, so the value of X-10 is. S= Total number of geometric isomers of CH3—CH==CH—CH==CH2 T = Number of compound more acidic than CH CH OH3 2 .
ISOMERISM
OCH3
- Match the Column (I) and (II)
- Match the Column (I) and (II). (Matrix)
- Match the Column (I) and (II). (Matrix)
- Match the Column (I) and (II)
- Match the Column (I) and (II). (Matrix)
The most stable conformation of the following compound is: Cl. Which of the following molecules have non-zero dipole moments. Which of the following compounds does not undergo a base-catalyzed exchange to D O2 even though it has an a-hydrogen. In which of the following compounds do they have a plane of symmetry and a center.
- Match the Column (I) and (II). (Matrix)
- Match the Column (I) and (II). (Matrix)
- Match the Column (I) and (II). (Matrix)
- Match the Column (I) and (II)
- Match the Column (I) and (II)
- Match the Column (I) and (II). (Matrix)
- Match the Column (I) and (II)
- Match the Column (I) and (II)
- Match the Column (I) and (II). (Matrix)
- Match the Column (I), (II) and (III). (Matrix)
- Comprehension
- Comprehension
- Match the column
Answer each of the following questions by writing letters (a through j) that correspond to your selection in each answer box. If there is no structure that fits the description, enter an x in the answer box. Study the following formulas and select the pairs that meet the following conditions: Be sure to write two letters (and only two) in each answer box unless you select f.
Examine the following formulas and choose those pairs that meet the following conditions: Make sure you write two letters (and only two) in each answer box. Consider the following statements about the given projection (True or False). a) W and Y are diastereomers (b) Z is the projection of X. The structure of one of the enantiomers of the amino acid cysteine is shown below.
Identify the following double bonds E, Z or none (N) in the compounds below. a) Bongkrekic acid is a toxic compound produced by Pseudomonas cocovenenans and isolated from a mold that grows on bongkrek, a fermented Indonesian coconut dish. For each of the following pharmaceutical compounds, identify all stereogenic (ie, all asymmetric carbon atoms) and label the configuration of each as (R) or (S). The correct statements about compound ( )A are:. a) The total number of possible stereoisomers for ( )A is 3 (b) The total number of possible mesoisomers for ( )A is 1 (c) The total number of possible pairs of enantiomers for ( )A is 1 (d) All of these.
GRIGNARD REAGENT
Reaction- 1 ;
- Comprehension
Which of the following solvents can still be used to dissolve the ethyl benzoate for its reaction with the already formed PhMgBr. a) acetone (b) ethyl acetate (c) absolute alcohol (d) benzene. Which of the following gives two isomers of the 3° alcohol when treated with phenyl magnesium bromide. Which of the following alcohols cannot be prepared by the reaction of acid chloride with excess Grignard reagent followed by acidification.
The reaction of elemental sulfur with Grignard reagent, followed by acidification, leads to the formation of. When ethyl acetoacetate reacts with one mole of methylmagnesium iodide, the reaction product will be The main product of the reaction between methyl butanoate and 2 mol CH is MgBr3 after hydrolysis.
Which, if any, of the following pairs of reagents can be used to prepare 2-phenyl-2-butanol. Which of the following compounds can A. Consider all steps and intermediate) correct statement. What combination(s) of alkyl bromide and epoxide can be used to prepare the following product by adding the Grignard reagent derived from the alkyl bromide to the epoxide.
Complex formation with ether molecules is an important factor in the formation and stability of Grignard reagent. Which of the following reactants gives primary alcohol as the main product when reacted with RMgX followed by acidification. How much isomer of C H O4 8 reacts with CH MgBr3 followed by acidification to give 2° alcohol (consider only carbonyl isomers).
HYDROCARBONS (ALKANES)
- Comprehension
- Match the column I and II
- Match the column
- Match the column
Give the total number of monochloro products (including stereoisomers), which are possible in the reaction above. Which of the following best describes the relationship between the methyl groups in the chair conformation of the substance shown below. Order of the bond strength of C — H bonds involving sp sp, 2 and sp3 hybridized carbon atoms is.
Which of the following reactants is suitable for the preparation of methane and ethane using only one step. How many carbon atoms does an alkane (not a cycloalkane) need before it can exist in enantiomeric form. Among the following free radical bromination reactions, choose the one in which 2° halide is the main product.
To maximize the yield of monochloro product in the above reaction. a) Cl2 must be added in excess. Arrange the transition states that occur during the following reaction steps in order of increasing stability (least ® most stable). Which of the following will give five monochloro products, when allowed to react with Cl2 in the presence of sunlight (stereoisomers excluded).
What would be the product ratio xy in the chlorination of propane if all hydrogen were removed equally? How many dichloro products (including stereoisomers) will be formed and when? a) Meso compound (b) Racemic mixture (c) Diastereomers (d) Optically active. How many different monochlorine products (including stereoisomers) can be obtained if the alkane shown below is heated in the presence of Cl2.
How many distinct monochlorinated products, (including stereoisomers) can be obtained when the alkane shown below is heated in the presence of Cl2.
HYDROCARBONS (ALKENES)
OCH3
