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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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Chapter
Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Consider the following molecules:

  1. (a) CH4
  2. (b) NH2Cl
  3. (c) BF3
  4. (d) CS2
    1. (i) In which compound are the bonds most polar?
    2. (ii) Which compounds are not polar?
    3. (iii) Are the H atoms in NH2Cl negative or positive?

(i)

Interpretation Introduction

Interpretation:

The compound that has most polar bonds has to be determined.

Concept Introduction:

Bond length:

Bond distance or bond length is the average distance between nuclei of two bonded atoms in a molecule. It is a transferable property of a bond between atoms of fixed types.

Bond dissociation enthalpy:

Bond energy or more correctly the bond dissociation enthalpy is the enthalpy change when breaking a bond in a molecule with the reactant and products in the gas phase.

Explanation

The electronegativity difference of the B and F is maximum .Hence ,B-F bond has maximum polarity . Therefore, compound possessing maximum polar bond

(ii)

Interpretation Introduction

Interpretation:

The compound that shows non-polar has to be determined.

Concept Introduction:

Bond length:

Bond distance or bond length is the average distance between nuclei of two bonded atoms in a molecule. It is a transferable property of a bond between atoms of fixed types.

Bond dissociation enthalpy:

Bond energy or more correctly the bond dissociation enthalpy is the enthalpy change when breaking a bond in a molecule with the reactant and products in the gas phase.

(iii)

Interpretation Introduction

Interpretation:

The hydrogen atoms in NH2Cl is either negative or positive has to be identified.

Concept Introduction:

Bond length:

Bond distance or bond length is the average distance between nuclei of two bonded atoms in a molecule. It is a transferable property of a bond between atoms of fixed types.

Bond dissociation enthalpy:

Bond energy or more correctly the bond dissociation enthalpy is the enthalpy change when breaking a bond in a molecule with the reactant and products in the gas phase.

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