Physical and Chemical Properties of Alkyl Halides

Which of the following combinations amongst the four Fischer projections represents the same absolute configurations?


                 



       

The compound with the above configuration is called:

Which of the following sugars has the configuration (2S, 3R, 4R)?

What kind of reagent would be needed to resolve a racemic amine, such as 2-aminobutane?

The R/S configuration of these compounds are respectively.

The R/S configuration of these compounds are respectively.

A pure simple of $2$-chlorobutane shows rotation of PPL by ${30}^{\mathrm{o}}$ in standard conditions. When above samples is made impure by mixing its opposite form, so that the composition of the mixture become $87.5 \%$ $\mathrm{d}$-form and $12.5 \%$ $\mathrm{l}$-form, then what will be the observed rotation for the mixture.

A solution of (+) -2-chloro-2-phenylethane in toluene racemises slowly in the presence of small amount of  $SbC{l}_5$ , due to the formation of –

${\left({\mathrm{CH}}_3\right)}_3\mathrm{CMgCl}$ on treatment with ${\mathrm{D}}_2\mathrm{O}$ produces:

In the reaction, ${\mathrm{CH}}_3\mathrm{Br} \stackrel{\mathrm{KCN}}{⟶} \mathrm{A} \stackrel{{\mathrm{H}}^{+}}{\to } \mathrm{B} \stackrel{{\mathrm{LiAlH}}_4}{⟶} \mathrm{C}$

The product C is.

Explain the term 'stereocentre'.

Le Bel and Van't Hoff does not point out the following about carbon atom-

What causes the optical activity in lactic acid ? 

Give the value of specific rotation of lactic acid.

Lactic acid form non-superimposable mirror image and exist as _____.

Draw the optical isomers of lactic acid.