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Question

Thecompoundshowsbelowinthediagram,ontreatmentwithacidcatalystisomerizesandequilibriumis established among thestereoisomers.

The equilibrium mixture contains all the three stereoisomers of this compound. Specific rotation of pure dextro isomer is +62° while the specific rotation of the equilibrium mixture is + 22°. Also the equilibrium mixture contains 20% of the meso isomers. Answer the following three qeustions based on the above information.
Composition of equilibrium mixture is:

  1. 20%meso,58%dextroand22%laevo    
  2. 20%meso,60%dextroand20%laevo    
  3. 20%meso,54%dextroand26%laevo    
  4. 20%meso,30%dextroand50%laevo    

The correct answer is: 20%meso,54%dextroand26%laevo

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Thecompoundshowsbelowinthediagram,ontreatmentwithacidcatalystisomerizesandequilibriumis established among thestereoisomers.

The equilibrium mixture contains all the three stereoisomers of this compound. Specific rotation of pure dextro isomer is +62° while the specific rotation of the equilibrium mixture is + 22°. Also the equilibrium mixture contains 20% of the meso isomers. Answer the following three qeustions based on the above information.
Thepercentageofracemicmixturepresentintheequilibriummixtureis:

Thecompoundshowsbelowinthediagram,ontreatmentwithacidcatalystisomerizesandequilibriumis established among thestereoisomers.

The equilibrium mixture contains all the three stereoisomers of this compound. Specific rotation of pure dextro isomer is +62° while the specific rotation of the equilibrium mixture is + 22°. Also the equilibrium mixture contains 20% of the meso isomers. Answer the following three qeustions based on the above information.
Thepercentageofracemicmixturepresentintheequilibriummixtureis:

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Thecompoundshowsbelowinthediagram,ontreatmentwithacidcatalystisomerizesandequilibriumis established among the stereoisomers.

The equilibrium mixture contains all the three stereoisomers of this compound. Specific rotation of pure dextro isomer is +62° while the specific rotation of the equilibrium mixture is + 22°. Also the equilibrium mixture contains 20% of the meso isomers. Answer the following three qeustions based on the above information.
The percentage purity of the equilibrium mixture is:

Thecompoundshowsbelowinthediagram,ontreatmentwithacidcatalystisomerizesandequilibriumis established among the stereoisomers.

The equilibrium mixture contains all the three stereoisomers of this compound. Specific rotation of pure dextro isomer is +62° while the specific rotation of the equilibrium mixture is + 22°. Also the equilibrium mixture contains 20% of the meso isomers. Answer the following three qeustions based on the above information.
The percentage purity of the equilibrium mixture is:

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