Question

Which of the following solutions would you expect to be optically active? Circle all that apply 5 g of (2R,3S)-2-bromo-3-chloropentane 5 g of (2R,3R)-2-bromo-3-chloropentane dissolved in an unknown volume of organic 10 g (R)-carvone and 10 g (S) carvone dissolved in 500 mL of CH2C12 10 g 2-chloro-2-bromopropane dissolved in 100 mL H20 solvent Solution formed by adding 5.0 mL of 1-methylbutane to 10 mL of CH3OH Solution formed by mixing 8.0 mL of 2.0 M (+)-2-butanol and 4.0 mL of 4.0 M (-)-2-butanol 15 g of (R,S)-2,3-dibromobutane dissolved in 25 mL of diethyl ether 10 g of sucrose dissolved in 10 mL of water and placed into a sample cell 10 dm in length 10 g of racemic cis-1-methyl-2-ethylcyclohexane dissolved in octane 0.01 g of sucrose dissolved in 10 mL of water and placed into a sample cell 10 dm in length

Answer 1

Which of the following solutions would you expect to be optically active? Circle all that apply. 10 g 2-chloro-2-bromopropane dissolved in 100 mL H2O 10 g (R)-carvone and 10 g (S)- 175 g of (2R,3S)-2-bromo-3-chloropentane carvone dissolved in 500 mL of 5 g of (2R,3R)-2-bromo-3-chloropentane CH2Cl2 dissolved in an unknown volume of organic solvent Since it is a racemic mixture, the Since it is a mixture of diastereomer, the mixture is optically inactive mixture expect to be optically active Hac 2-bromo-2-chloropropane c i CH, Optically inactive .HOH 15 g of (R,S)-2,3-dibromobutane Solution formed by adding 5.0 ml Solution formed by mixing dissolved in 25 mL of diethyl ether of 1-methylbutane to 10 mL of 8.0 mL of 2.0 M (+)-2-butanol and CH3 СН,ОН 4.0 mL of 4.0 M (-)-2-butanol Br +H Since it a meso Br+H compound it is Since it is a unequal mixture of enantiomer Optically inactive CH 1 Methyl butane optically inactive the mixture is expect to be optically active 10 g of racemic 110 g of sucrose dissolved in 10 mL N0.01 g of sucrose dissolved in 10 mL of cis-1-methyl-2-ethylcyclohexane of water and placed into a sample water and placed into a sample cell 10 dm dissolved in octane cell 10 dm in length in length Since it is a racemic mixture, the Optically active mixture is optically inactive Optically active OH HO HO Sucrose OH