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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

Dinitrogen monoxide, N2O (commonly called nitrous oxide), is prepared by the careful decomposition of ammonium nitrate and is used as an oxidizing agent in rocket engines as well as a weak general anesthetic (where you may know it as “laughing gas”). However, it is also known to be a powerful greenhouse gas. In a Science magazine article, it was stated that “Human activities may be causing an unprecedented rise in the terrestrial N2O source. Marine N2O production may also rise substantially as result of eutrophication, warming and ocean acidification.” [L. A. Codispoti, Science, Vol. 327, pp. 1339-1340, 2010.]

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The powerful greenhouse gas N2O is used as a propellant in cans of instant whipped cream.

  1. (a) Draw a Lewis electron dot structure for N2O, and specify the formal charge on each atom and the molecular geometry.
  2. (b) The atom connections are N—N—O. Why is the connection N—O—N not likely?

The highest N2O concentration observed in the ocean is about 800 nM (nanomolar). At this concentration, what is the mass of N2O per liter?

(a)

Interpretation Introduction

Interpretation: The Lewis electron dot structure for N2O has to be drawn, its molecular geometry and the formal charge on each atom in the molecule should be specified.

Concept introduction:

Nitrous oxide is also called as laughing gas. The importance of N2O comes in the fact that it is a powerful green-house gas.

Lewis dot structure: For a given molecule, the bonding concerning the atoms and also the lone pairs can be shown by a diagram.

In this structure a single bond is represented by one dot pair and double bond is represented by two dot pairs and so on.

Formal charge: A charge is assigned to an atom in the molecule with an assumption that there is an equal sharing of electrons in all chemical bonds.

Formalcharge=VNB2VValencee-NNumberofnon-bondingvalencee-BTotalnumberofe-sharedinabond

Explanation

N2O has a linear geometry with the central atom oxygen. The bond can be represented as N

(b)

Interpretation Introduction

Interpretation: The atom connections are NNO. It should be determined that why is the connection NON not likely.

Concept introduction:

Lewis dot structure: For a given molecule, the bonding concerning the atoms and also the lone pairs can be shown by a diagram.

In this structure a single bond is represented by one dot pair and double bond is represented by two dot pairs and so on.

Formal charge: A charge is assigned to an atom in the molecule with an assumption that there is an equal sharing of electrons in all chemical bonds.

Formalcharge=VNB2VValencee-NNumberofnon-bondingvalencee-BTotalnumberofe-sharedinabond

(c)

Interpretation Introduction

Interpretation: The mass of N2O per liter of the respective solution should be determined.

Concept introduction:

Concentration=massVolumeMass=Concentration×Volume

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