Answer
Verified
393k+ views
Hint: A substance which has optical activity, is a substance which rotates the plane of plane polarized light. To know whether a compound is optical active we need to consider the property of chirality. By chirality we mean a carbon having 4 different groups attached to it. If we find any chiral centre, then that compound is optically active. With this approach, we can find out which of the compounds mentioned in the options are optically active.
Complete step by step answer:
Option A mentions the compound $\text{C}{{\text{H}}_{3}}\text{C}{{\text{H}}_{\text{2}}}\text{COOH}$ which has an IUPAC name of propanoic acid has a molecular structure of,
As per the definition, no carbon atom in propanoic acid is seen to be bonded to four different atoms or groups of atoms. Hence, propanoic acid is optically inactive in nature.
Option B mentions the compound $\text{HOOC - C}{{\text{H}}_{\text{2}}}\text{- COOH}$ also known as Malonic acid has a molecular structure of,
As per the definition, no carbon atom in Malonic acid is seen to be bonded to four different atoms or groups of atoms. Hence, Malonic acid is optically inactive in nature.
Option C mentions the compound $\text{C}{{\text{H}}_{\text{3}}}\text{CH(OH)COOH}$ which has an IUPAC name of 2-hydroxypropanoic acid, also known as lactic acid has a molecular structure of,
As per the definition, here we can see one carbon atom in Lactic acid is seen to be bonded to four different atoms or groups of atoms forming a Levo and a Dextro structure. Hence, Lactic acid is optically active in nature.
Option D mentions the compound $\text{C}{{\text{l}}_{\text{2}}}\text{CHCOOH}$ which has an IUPAC name of dichloroacetic acid has a molecular structure of,
As per the definition, no carbon atom in dichloroacetic acid is seen to be bonded to four different atoms or groups of atoms. Hence, dichloroacetic acid is optically inactive in nature.
Therefore, the correct option is Option C.
Note: Therefore, we can say that chiral molecules are optically active, which implies that when a beam of plane polarized light passes through a chiral molecule. This will make sure that it interacts with the molecule in such a way that the angle of the plane of oscillation rotates.
Complete step by step answer:
Option A mentions the compound $\text{C}{{\text{H}}_{3}}\text{C}{{\text{H}}_{\text{2}}}\text{COOH}$ which has an IUPAC name of propanoic acid has a molecular structure of,
As per the definition, no carbon atom in propanoic acid is seen to be bonded to four different atoms or groups of atoms. Hence, propanoic acid is optically inactive in nature.
Option B mentions the compound $\text{HOOC - C}{{\text{H}}_{\text{2}}}\text{- COOH}$ also known as Malonic acid has a molecular structure of,
As per the definition, no carbon atom in Malonic acid is seen to be bonded to four different atoms or groups of atoms. Hence, Malonic acid is optically inactive in nature.
Option C mentions the compound $\text{C}{{\text{H}}_{\text{3}}}\text{CH(OH)COOH}$ which has an IUPAC name of 2-hydroxypropanoic acid, also known as lactic acid has a molecular structure of,
As per the definition, here we can see one carbon atom in Lactic acid is seen to be bonded to four different atoms or groups of atoms forming a Levo and a Dextro structure. Hence, Lactic acid is optically active in nature.
Option D mentions the compound $\text{C}{{\text{l}}_{\text{2}}}\text{CHCOOH}$ which has an IUPAC name of dichloroacetic acid has a molecular structure of,
As per the definition, no carbon atom in dichloroacetic acid is seen to be bonded to four different atoms or groups of atoms. Hence, dichloroacetic acid is optically inactive in nature.
Therefore, the correct option is Option C.
Note: Therefore, we can say that chiral molecules are optically active, which implies that when a beam of plane polarized light passes through a chiral molecule. This will make sure that it interacts with the molecule in such a way that the angle of the plane of oscillation rotates.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
How do you solve x2 11x + 28 0 using the quadratic class 10 maths CBSE
Select the correct plural noun from the given singular class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
The sum of three consecutive multiples of 11 is 363 class 7 maths CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
How many squares are there in a chess board A 1296 class 11 maths CBSE