OPTICS -2 ( jee)

Assertion : In a coordination entity [PtCl_(2)(en)_(2)]^(2+) only the cis-isomer shows optical activity . Reason : Optical isomerism is common in octahedral complexes involving didentate ligands .

Reaction of an optically active alcohol with SOCl_2 in absence of base follows with

The one that will show optical activity is : (en = ethane -1, 2 -diamine)

Why is butan-1-ol optically inactive but butan-2-ol is optically active?

The possible number of the optical isomers in [Cr(en)_(2)CI_(2)]^(o+) is .

Optically active isomer (A) of (C_(5)H_(9)Cl) on treatment with one mole of H_(2) gives an optically inactive compound (B) compound (A) will be :

The one that will show optical activity is: (en = ethane-1,2-diamine)

The main objective of an optical source is

Tartaric acid [HO_(2)CCH(OH)CH(OH)CO_(2)H] was an important compound in history of stereochemistry. Two naturally occuring forms of tartaric acid are optically inactive. One optically inactive form (P) has a melting point of 210- 212^(@) C and can be separated into two optically acitve forms, whereas other optically inactive form (Q) cannot be resolved further. Optically inactive form Q is

What is the optical nature of the product obtained in an S_(N^1) reaction if the substrate is optically active ?