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Chemical Reactivity (Group 1)

43 CH3CHClCOO...

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43 CH3CHClCOOH + CH3CHDOH ------> ester Racemic mixture optically pure d isomer In the given reaction in acidic medium , the number of isomeric products formed is, A 1 B 2 C 3 D 4

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STATEMENT-1 : Racemic mixture has a net rotation of zero.

STATEMENT-2 : Racemic mixture contains optically inactive isomers.

Q. An enantiomerically pure acid is treated with racemic mixture of an alcohol having chiral carbon, the ester formed will be:

Q. An optically pure compound X gave an

{[α]}_{D}^{25} = + {20.0}^{0} .

A mixture of (X) and its enantiomer (Y) gave

{[α]}_{D}^{25} = + {10.0}^{0} .

Select the true (

T

F

) statements regarding this mixture.

(a) It has 50% dextrorotatory isomer.

(b) It has 25% laevorotatory isomer.

(c) It has 50% optical purity.

Pure enantiomeric acid + optically active alcohol having chiral C atom $\to$ ?

Q. Match list-I (Cooordination Compounds) with list-II (Type of Isomerism) and select the correct answer using the codes given below :

	List-I		List-II
A.	$C o (N H_{3})_{4} C l_{2}$	1.	Optical isomerism
B.	$C i s - C o (e n)_{3} C l_{2}$	2.	Ionization Isomerism
C.	$C o (e n)_{2} (N O)_{2} C l S C N$	3.	Co-ordination Isomerism
D.	$C o (N H_{3})_{6} C r (C N)_{6}$	4.	Geometrical Isomerism

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