Which of the following statements about chirality and optical isomerism is NOT true:Group of answer choicesA racemic mixture has no optical rotation due to the equal amounts of the two enantiomers cancelling each other out.The necessary condition for an object to be chiral is that it is different from its mirror image.Enantiomers are objects which are non identical mirror images.Enantiomeric molecules differ from one another in the direction which they rotate the plane of polarised light.3-bromopentane is a chiral molecule.
Question
Which of the following statements about chirality and optical isomerism is NOT true:Group of answer choicesA racemic mixture has no optical rotation due to the equal amounts of the two enantiomers cancelling each other out.The necessary condition for an object to be chiral is that it is different from its mirror image.Enantiomers are objects which are non identical mirror images.Enantiomeric molecules differ from one another in the direction which they rotate the plane of polarised light.3-bromopentane is a chiral molecule.
Solution
The statement that is NOT true is: "Enantiomers are objects which are non identical mirror images."
This is incorrect because enantiomers are actually objects that are mirror images of each other, but are not superimposable. In other words, they are identical in terms of their molecular formula and structure, but differ in how they can be oriented in three-dimensional space. This is what gives them their unique properties, such as the ability to rotate plane-polarized light in different directions.
Similar Questions
A12. Which ONE of the following statements is INCORRECT?(A) A racemic mixture is a 1:1 mixture of two enantiomers.(B) Enantiomers have identical physical properties except for theirinteraction with plane polarised light.(C) Enantiomers of the same compound rotate the plane of polarised lightin the same direction but by differing amounts.(D) Enantiomers can have very different biological properties.(E) Enantiomers are isomers that are non-superimposable mirror images.
Statement-I : Essential condition for a compound to be an optically active is presence of chiral carbon.Statement-II : If there is one chiral carbon then molecule have no symmetry.
Which is correct statement-If there is chiral carbon then it is optically active.If there is no plane of symmetry then compound will be optically active.In Fischer projection, vertical line represents group towards observer2-Chlorobutane shows optical isomerism
Which of the following statements is not true regarding pairs of enantiomers? ans. They rotate plane polarized light in opposite directions They react at identical rates with chiral reagents They have identical boiling points They have identical melting points
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