4. Draw as a polygon structure one of the following steroids: Estradiol [Estr-1,3,5(10)-triene-3,173-diol] or Testosterone 173-hydroxyandrost-4-ene-3-one
Carbohydrates
Carbohydrates are the organic compounds that are obtained in foods and living matters in the shape of sugars, cellulose, and starch. The general formula of carbohydrates is Cn(H2O)2. The ratio of H and O present in carbohydrates is identical to water.
Starch
Starch is a polysaccharide carbohydrate that belongs to the category of polysaccharide carbohydrates.
Mutarotation
The rotation of a particular structure of the chiral compound because of the epimerization is called mutarotation. It is the repercussion of the ring chain tautomerism. In terms of glucose, this can be defined as the modification in the equilibrium of the α- and β- glucose anomers upon its dissolution in the solvent water. This process is usually seen in the chemistry of carbohydrates.
L Sugar
A chemical compound that is represented with a molecular formula C6H12O6 is called L-(-) sugar. At the carbon’s 5th position, the hydroxyl group is placed to the compound’s left and therefore the sugar is represented as L(-)-sugar. It is capable of rotating the polarized light’s plane in the direction anticlockwise. L isomers are one of the 2 isomers formed by the configurational stereochemistry of the carbohydrates.
![4. Draw as a polygon structure one of the following steroids:
Estradiol [Estr-1,3,5(10)-triene-3,17B-diol] or
Testosterone 17B-hydroxyandrost-4-ene-3-one
5. Fill in non-bonding electrons and draw the resonance forms using arrows on one structure to show
the movement of electrons in the following ions or molecules.
[a] th O
[b] o /
hair fom f the et
6. Acid base reactions reach equilibrium almost instantly on mixing. Draw the conjugate acid and
conjugate base for the following a proton transfer reactions, and using the pKa values you are given,
circle the arrow in the direction that the equilibrium lies.
[a]
pka =4.7
[b] C3G+2NH3 + at3
pka= 10,7
Tiwo products for the
7. Circle the one more stable structure in each of the following pairs of molecules or ions:
CHS
8. Inspect the following molecules and label each as Z or E isomers if appropriate.
atz
actions
Br
Br
CH3
9. Write a reaction mechanism for the addition of hydrogen bromide to 3-methyl-1-butene. Show the carbocation
formation and rearrangement leading to the major 3° alkyl bromide product](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe9928f20-3b70-4abf-895b-c48ef51932c1%2F78ba390a-f012-4199-b08e-6c6ce48b8a35%2Fm24s3qk_processed.jpeg&w=3840&q=75)
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