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Chemistry & Chemical Reactivity

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

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

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

In methane hydrate the methane molecule is trapped in a cage of water molecules. Describe the structure: (a) how many water molecules make up the cage, (b) how many hydrogen bonds are involved, and (c) how many faces does the cage have? (Figure 20 16.)

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(a) Methane hydrate burns as methane gas escapes from the solid hydrate.

(b) Methane hydrate consists of a lattice of water molecules with methane molecules trapped in the cavity.

(a)

Interpretation Introduction

Interpretation: The number of water molecules in the cage of methane hydrate has to be determined.

Concept introduction:

Methane hydrate: The structure of methane hydrate consists of having a methane molecule trapped in a cage of water molecules. It is considered to be a potential source of fuel in coming future.

At high pressure, if water is condensed in the occurrence of methane, methane hydrates or methane clathrates are formed.

Dodecahedron structure:

  Number of faces is12

  Number of vertices is 20

  Number of diagonals is 160

  Number of edges is 30

Explanation

Methane is trapped in the cage of water molecules in the compound methane hydrate.

The cage of water molecules is in dodecahedron structure...

(b)

Interpretation Introduction

Interpretation: The number of hydrogen bonds in the cage of methane hydrate has to be determined.

Concept introduction:

Methane hydrate: The structure of methane hydrate consists of having a methane molecule trapped in a cage of water molecules. It is considered to be a potential source of fuel in coming future.

At high pressure, if water is condensed in the occurrence of methane, methane hydrates or methane clathrates are formed.

Dodecahedron structure:

  Number of faces is12

  Number of vertices is 20

  Number of diagonals is 160

  Number of edges is 30

(c)

Interpretation Introduction

Interpretation: The number of faces in the cage of methane hydrate has to be determined.

Concept introduction:

Methane hydrate: The structure of methane hydrate consists of having a methane molecule trapped in a cage of water molecules. It is considered to be a potential source of fuel in coming future.

At high pressure, if water is condensed in the occurrence of methane, methane hydrates or methane clathrates are formed.

Dodecahedron structure:

  Number of faces is12

  Number of vertices is 20

  Number of diagonals is 160

  Number of edges is 30

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