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Chemistry & Chemical Reactivity

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

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Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

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

Which compound in each of the following pairs should have the higher melting point? Explain briefly.

  1. (a) NaCl or RbCl
  2. (b) BaO or MgO
  3. (c) NaCl or MgS

(a)

Interpretation Introduction

Interpretation:

The higher melting point has to be identified.

Concept introduction:

  • At atmospheric pressure, at which temperature the solid compound is convert in to liquid state is called the melting point of the solid compound. At the melting point the solid and liquid phase exists in equilibrium.
  • An ionic solid is made up cations and anions held together by electrostatic forces in a rigid array or lattice.
  • Positive charge ions are cations and negative charge ions are anions.
  • Ionic bonds are formed between the cations and anions is purely electrostatic attraction.
Explanation

Sodium chloride has higher melting point because, Lattice energy is proportional to charge...

(b)

Interpretation Introduction

Interpretation:

The higher melting point has to be identified.

Concept introduction:

  • At atmospheric pressure, at which temperature the solid compound is convert in to liquid state is called the melting point of the solid compound. At the melting point the solid and liquid phase exists in equilibrium.
  • An ionic solid is made up cations and anions held together by electrostatic forces in a rigid array or lattice.
  • Positive charge ions are cations and negative charge ions are anions.
  • Ionic bonds are formed between the cations and anions is purely electrostatic attraction

(c)

Interpretation Introduction

Interpretation:

The higher melting point has to be identified.

Concept introduction:

  • At atmospheric pressure, at which temperature the solid compound is convert in to liquid state is called the melting point of the solid compound. At the melting point the solid and liquid phase exists in equilibrium.
  • An ionic solid is made up cations and anions held together by electrostatic forces in a rigid array or lattice.
  • Positive charge ions are cations and negative charge ions are anions.
  • Ionic bonds are formed between the cations and anions is purely electrostatic attraction

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