Question

In: Chemistry

1) Which of the following compounds exhibits optical isomerism? Which of the following compounds exhibits optical...

1)

Which of the following compounds exhibits optical isomerism?

Which of the following compounds exhibits optical isomerism?

CH3-CHBr-CH3
CH3-CH2-CHF-CH3
CH3-CH2-CH3
CH3-CH2-CH2F

CH3-CH2-CBr2-CH3

2)

Based on the molecular formula, determine whether each compound is an alkane, alkene, or alkyne. (Assume that the hydrocarbons are noncyclical and there is no more than one multiple bond.)

Drag the appropriate items to their respective bins.

"C3H6 C4H10 C4H6 C2H2"

Alkane

Alkene

Alkyne

3)

Which of the following alkane names is correct?

Which of the following alkane names is correct?

1,2-dimethylhexane
3-ethyl-2-methylhexane
1-propylnonane
4,5-dipropylpentane

All of the above names are correct.

4)

Which of the following names are correct?

Which of the following names are correct?

5-ethyl-6-heptene
3-ethyl-1-heptene
3-etheneheptane
3-butyl-4-pentene
All of the above are correct.

5)

Write the balanced chemical equation for the catalytic hydrogenation (addition of H2) to CH3CH=CHCH3.

Write the balanced chemical equation for the catalytic hydrogenation (addition of H2) to CH3CH=CHCH3.

CH3CH=CHCH3 + H2 → CH3CH2CH2CH3
CH3CH=CHCH3 + 2 H2 → 2 CH3CH3
CH3CH=CHCH3 + 3 H2 → CH3CH3 + 2 CH4
CH3CH=CHCH3 + 2 H2 → CH3CH2CH3 + CH4

CH3CH=CHCH3 + 4 H2 → 4 CH4

6)

Write the balanced chemical equation for the addition of HBr to CH2=CHCH2CH3.

Write the balanced chemical equation for the addition of HBr to CH2=CHCH2CH3.

CH2=CHCH2CH3 + 2 HBr → CH3Br + CH2BrCH2CH3
CH2=CHCH2CH3 + HBr → CH3CHBrCH2CH3
CH2=CHCH2CH3 + 4 HBr → 4 CH3Br
CH2=CHCH2CH3 + 2 HBr → 2 CH2BrCH3

8)

Which of the following names is correct?

Which of the following names is correct?

1,2,4-trifluorobenzene
2,5-dibromocyclohexene
4-isopropyl-6-methylbenzene
1,3,4-fluorobenzene
1-methyl-3-isopropylhexene

Solutions

Expert Solution

1) CH3CH2CHFCH3 this exhibit optical isomerism because the carbon should attach four different atoms.

2) the general formula of alkane is CnH2n+2.C4H10 satisfy this formula here n= 4 thats why this is butane

     the general formula of alkene is CnH2n. C3H6 satis fy this formula here n= 3 thats why this is propene

      the general formula of alkyne is CnH2n-2. C2H2 satisfy this formula here n= 2 it contains only one multiple bond thats why this is acetylene

3) 3-ethyl-2-methylhexane this alkane name is the correct because this satisy the all IUPAC naming system rule whe compared to others.

4) 3-ethyl-1-heptene this alkane name is the correct because this satisy the all IUPAC naming system rule whe compared to others.

5) CH3CH=CHCH3 + H2 → CH3CH2CH2CH3 this is the correct. the catalytic hydrogen will attack at double bonded carbon each double bond will take one molecule of hydrogen.

6) CH2=CHCH2CH3 + HBr → CH3CHBrCH2CH3 this is the correct because the addition of bromine follow the markonikoffs rule the negative charge bromine will attack at less hydrogen substituted carbon for double bonded carbon.

8) 1,2,4-trifluorobenzene this is the correct one because this satisy the all IUPAC naming system rule whe compared to others.


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