If the dipole moment of Toluene and Nitro-benzene are 0.43 D and 3.93 D respectively, then what is the expected dipole moment of p-Nitrotoluene?

Question

If the dipole moment of Toluene and Nitro-benzene are 0.43 D and 3.93 D respectively, then what is the expected dipole moment of p-Nitrotoluene? (A) 3.50 D (B) 2.18 D (C) 4.36 D (D) 5.30 D

Tardigrade Admin · Accepted Answer

Methyl group has + textI effect and -NO2 group has - textI effect . Therefore, in p-nitro toluene the dipole moments of -CH3 and -NO2 groups act in the same direction. So, the resultant dipole moment is additive. i.e., 3.93 + 0.43 = 4.36 debye <img class="img-fluid question-image" alt="Solution" src="https://cdn.tardigrade.in/q/nta/c-tlviw4xl4kcs.png" />

Q. If the dipole moment of Toluene and Nitro-benzene are 0.43 D and 3.93 D respectively, then what is the expected dipole moment of p-Nitrotoluene?

3.50 D

2.18 D

4.36 D

5.30 D

Methyl group has $+ I$ effect and $- N O_{2}$ group has $- I$ effect $.$ Therefore, in p-nitro toluene the dipole moments of $- C H_{3}$ and $- N O_{2}$ groups act in the same direction. So, the resultant dipole moment is additive.

i.e., 3.93 + 0.43 = 4.36 debye

Q. If the dipole moment of Toluene and Nitro-benzene are 0.43 D and 3.93 D respectively, then what is the expected dipole moment of p-Nitrotoluene?

3.50 D

2.18 D

4.36 D

5.30 D

Methyl group has +I effect and −NO2​ group has −I effect . Therefore, in p-nitro toluene the dipole moments of −CH3​ and −NO2​ groups act in the same direction. So, the resultant dipole moment is additive. i.e., 3.93 + 0.43 = 4.36 debye

Methyl group has $+ I$ effect and $- N O_{2}$ group has $- I$ effect $.$ Therefore, in p-nitro toluene the dipole moments of $- C H_{3}$ and $- N O_{2}$ groups act in the same direction. So, the resultant dipole moment is additive.

i.e., 3.93 + 0.43 = 4.36 debye