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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313857 The dipole moment of water molecule is 1.85 D. In S.I.units it is equal to

1

1 .85 \times 10 e . s . u - c m

2

1 .85 \times 3 .3 \times 10 c m

3

85 \times 3 .3 \times 10 c m

4

1 .85 \times 3 .3 \times 1 0^{- 30} c m

Explanation:

$1 D = 3 .3 \times 1 0^{- 30} C . m$

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313858 The dipole moment of HBr is $1 .6 \times 1 0^{- 30}$ C.m and interatomic spacing is $1 A^{\circ}$ . The % ionic character of HBr is

1 7

2 10

3 15

4 27

Explanation:

Charge of $e^{-} = 1 .6 \times 1 0^{- 19}$
Dipole moment of HBr $= 1 .6 \times 1 0^{- 30}$
Interatomic spacing $1 \overset{o}{A} = 1 \times 1 0^{- 10} m$
% of ionic character in HBr
$= \frac{D i p o l e m o m e n t o f H B r}{I n t e r s p a c i n g d i s t a n c e \times q} \times 100$
$= \frac{1 .6 \times 1 0^{- 30}}{1 .6 \times 1 0^{- 19} \times 1 0^{- 10}} \times 100$
$= 1 0^{- 30} \times 1 0^{29} \times 100 = 1 0^{- 1} \times 100$
$= 0 .1 \times 100 = 10 %$

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313859 In which of the following pair of species, first molecule has more dipole moment than second molecule?

1 HF and HCl

2

{PF}_{2} {Cl}_{3}

and

{PF}_{4} Cl

3

{CH}_{3} F

and

{CH}_{3} Cl

4

{CHCl}_{3}

and

{CH}_{2} {Cl}_{2}

Explanation:

Only $HF > HCl$ on account of difference in electronegativity.

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313860 The dipole moment of chlorobenzene (Figure 1 below) is 1.5D. The dipole moment of (Figure 2 below) is
supporting img

1 2.86 D

2 2.25 D

3 1.5 D

4 0 D

Explanation:

$μ_{R} = 2 (B o n d m o m e n t) c o s \frac{θ}{2}$
supporting img

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313857 The dipole moment of water molecule is 1.85 D. In S.I.units it is equal to

1

1 .85 \times 10 e . s . u - c m

2

1 .85 \times 3 .3 \times 10 c m

3

85 \times 3 .3 \times 10 c m

4

1 .85 \times 3 .3 \times 1 0^{- 30} c m

Explanation:

$1 D = 3 .3 \times 1 0^{- 30} C . m$

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313858 The dipole moment of HBr is $1 .6 \times 1 0^{- 30}$ C.m and interatomic spacing is $1 A^{\circ}$ . The % ionic character of HBr is

1 7

2 10

3 15

4 27

Explanation:

Charge of $e^{-} = 1 .6 \times 1 0^{- 19}$
Dipole moment of HBr $= 1 .6 \times 1 0^{- 30}$
Interatomic spacing $1 \overset{o}{A} = 1 \times 1 0^{- 10} m$
% of ionic character in HBr
$= \frac{D i p o l e m o m e n t o f H B r}{I n t e r s p a c i n g d i s t a n c e \times q} \times 100$
$= \frac{1 .6 \times 1 0^{- 30}}{1 .6 \times 1 0^{- 19} \times 1 0^{- 10}} \times 100$
$= 1 0^{- 30} \times 1 0^{29} \times 100 = 1 0^{- 1} \times 100$
$= 0 .1 \times 100 = 10 %$

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313859 In which of the following pair of species, first molecule has more dipole moment than second molecule?

1 HF and HCl

2

{PF}_{2} {Cl}_{3}

and

{PF}_{4} Cl

3

{CH}_{3} F

and

{CH}_{3} Cl

4

{CHCl}_{3}

and

{CH}_{2} {Cl}_{2}

Explanation:

Only $HF > HCl$ on account of difference in electronegativity.

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313860 The dipole moment of chlorobenzene (Figure 1 below) is 1.5D. The dipole moment of (Figure 2 below) is
supporting img

1 2.86 D

2 2.25 D

3 1.5 D

4 0 D

Explanation:

$μ_{R} = 2 (B o n d m o m e n t) c o s \frac{θ}{2}$
supporting img

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313857 The dipole moment of water molecule is 1.85 D. In S.I.units it is equal to

1

1 .85 \times 10 e . s . u - c m

2

1 .85 \times 3 .3 \times 10 c m

3

85 \times 3 .3 \times 10 c m

4

1 .85 \times 3 .3 \times 1 0^{- 30} c m

Explanation:

$1 D = 3 .3 \times 1 0^{- 30} C . m$

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313858 The dipole moment of HBr is $1 .6 \times 1 0^{- 30}$ C.m and interatomic spacing is $1 A^{\circ}$ . The % ionic character of HBr is

1 7

2 10

3 15

4 27

Explanation:

Charge of $e^{-} = 1 .6 \times 1 0^{- 19}$
Dipole moment of HBr $= 1 .6 \times 1 0^{- 30}$
Interatomic spacing $1 \overset{o}{A} = 1 \times 1 0^{- 10} m$
% of ionic character in HBr
$= \frac{D i p o l e m o m e n t o f H B r}{I n t e r s p a c i n g d i s t a n c e \times q} \times 100$
$= \frac{1 .6 \times 1 0^{- 30}}{1 .6 \times 1 0^{- 19} \times 1 0^{- 10}} \times 100$
$= 1 0^{- 30} \times 1 0^{29} \times 100 = 1 0^{- 1} \times 100$
$= 0 .1 \times 100 = 10 %$

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313859 In which of the following pair of species, first molecule has more dipole moment than second molecule?

1 HF and HCl

2

{PF}_{2} {Cl}_{3}

and

{PF}_{4} Cl

3

{CH}_{3} F

and

{CH}_{3} Cl

4

{CHCl}_{3}

and

{CH}_{2} {Cl}_{2}

Explanation:

Only $HF > HCl$ on account of difference in electronegativity.

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313860 The dipole moment of chlorobenzene (Figure 1 below) is 1.5D. The dipole moment of (Figure 2 below) is
supporting img

1 2.86 D

2 2.25 D

3 1.5 D

4 0 D

Explanation:

$μ_{R} = 2 (B o n d m o m e n t) c o s \frac{θ}{2}$
supporting img

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313857 The dipole moment of water molecule is 1.85 D. In S.I.units it is equal to

1

1 .85 \times 10 e . s . u - c m

2

1 .85 \times 3 .3 \times 10 c m

3

85 \times 3 .3 \times 10 c m

4

1 .85 \times 3 .3 \times 1 0^{- 30} c m

Explanation:

$1 D = 3 .3 \times 1 0^{- 30} C . m$

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313858 The dipole moment of HBr is $1 .6 \times 1 0^{- 30}$ C.m and interatomic spacing is $1 A^{\circ}$ . The % ionic character of HBr is

1 7

2 10

3 15

4 27

Explanation:

Charge of $e^{-} = 1 .6 \times 1 0^{- 19}$
Dipole moment of HBr $= 1 .6 \times 1 0^{- 30}$
Interatomic spacing $1 \overset{o}{A} = 1 \times 1 0^{- 10} m$
% of ionic character in HBr
$= \frac{D i p o l e m o m e n t o f H B r}{I n t e r s p a c i n g d i s t a n c e \times q} \times 100$
$= \frac{1 .6 \times 1 0^{- 30}}{1 .6 \times 1 0^{- 19} \times 1 0^{- 10}} \times 100$
$= 1 0^{- 30} \times 1 0^{29} \times 100 = 1 0^{- 1} \times 100$
$= 0 .1 \times 100 = 10 %$

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313859 In which of the following pair of species, first molecule has more dipole moment than second molecule?

1 HF and HCl

2

{PF}_{2} {Cl}_{3}

and

{PF}_{4} Cl

3

{CH}_{3} F

and

{CH}_{3} Cl

4

{CHCl}_{3}

and

{CH}_{2} {Cl}_{2}

Explanation:

Only $HF > HCl$ on account of difference in electronegativity.

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313860 The dipole moment of chlorobenzene (Figure 1 below) is 1.5D. The dipole moment of (Figure 2 below) is
supporting img

1 2.86 D

2 2.25 D

3 1.5 D

4 0 D

Explanation:

$μ_{R} = 2 (B o n d m o m e n t) c o s \frac{θ}{2}$
supporting img

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