Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 9: Problem 44

Classify each of the following species as molecular, network covalent, ionic, or metallic. (a) W (b) \(\mathrm{NO}_{2}\) (c) \(\mathrm{C}\) (diamond) (d) \(\left(\mathrm{NH}_{4}\right)_{2} \mathrm{CO}_{3}\) (e) \(\mathrm{F}_{2}(g)\)

Short Answer

Expert verified
Question: Classify the following chemical species into categories such as molecular, network covalent, ionic, and metallic: a) W b) \(\mathrm{NO}_{2}\) c) \(\mathrm{C}\) (diamond) d) \((\mathrm{NH}_{4})_{2} \mathrm{CO}_{3}\) e) \(\mathrm{F}_{2}(g)\) Answer: a) W is classified as metallic. b) \(\mathrm{NO}_{2}\) is classified as molecular. c) \(\mathrm{C}\) (diamond) is classified as network covalent. d) \((\mathrm{NH}_{4})_{2} \mathrm{CO}_{3}\) is classified as ionic. e) \(\mathrm{F}_{2}(g)\) is classified as molecular.

Step by step solution

01

Classify W

W, or tungsten, is a metallic element. It forms a lattice of positive metal ions surrounded by electrons in a 'sea' of delocalized electrons, which is characteristic of metallic bonding. Therefore, W is classified as metallic. #b#
02

Classify \(\mathrm{NO}_{2}\)

\(\mathrm{NO}_{2}\) is a molecule formed by nitrogen and oxygen atoms sharing electrons between them through covalent bonding. It has a discrete molecular structure, so we classify \(\mathrm{NO}_{2}\) as molecular. #c#
03

Classify \(\mathrm{C}\) (diamond)

In diamond, each carbon atom is covalently bonded to four other carbon atoms in a network. These bonds create a continuous chain of covalent bonds that extend throughout the crystal, forming a highly stable and strong network. Therefore, \(\mathrm{C}\) (diamond) is classified as network covalent. #d#
04

Classify \((\mathrm{NH}_{4})_{2} \mathrm{CO}_{3}\)

In \((\mathrm{NH}_{4})_{2} \mathrm{CO}_{3}\) (ammonium carbonate), ammonium ions (\(\mathrm{NH}_{4}^{+}\)) and carbonate ions (\(\mathrm{CO}_{3}^{2-}\)) are held together by electrostatic forces of attraction between the positively charged ammonium ions and the negatively charged carbonate ions. This type of structure is characteristic of ionic compounds, so we classify \((\mathrm{NH}_{4})_{2} \mathrm{CO}_{3}\) as ionic. #e#
05

Classify \(\mathrm{F}_{2}(g)\)

\(\mathrm{F}_{2}(g)\) is a diatomic molecule composed of two fluorine atoms sharing electrons through a covalent bond. It has a discrete molecular structure, which is characteristic of molecular compounds. Therefore, we classify \(\mathrm{F}_{2}(g)\) as molecular.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

\(p\) -Dichlorobenzene, \(\mathrm{C}_{6} \mathrm{H}_{4} \mathrm{Cl}_{2}\), can be one of the ingredients in mothballs. Its vapor pressure at \(20^{\circ} \mathrm{C}\) is \(0.40 \mathrm{~mm} \mathrm{Hg}\). (a) How many milligrams of \(\mathrm{C}_{6} \mathrm{H}_{4} \mathrm{Cl}_{2}\) will sublime into an evacuated 750-mL flask at \(20^{\circ} \mathrm{C}\) ? (b) If \(5.0 \mathrm{mg}\) of \(p\) -dichlorobenzene were put into an evacuated 750 -mL flask, how many milligrams would remain in the solid phase? (c) What is the final pressure in an evacuated 500 -mL flask at \(20^{\circ} \mathrm{C}\) that contains \(2.00 \mathrm{mg}\) of \(p\) -dichlorobenzene? Will there be any solid in the flask?

Explain in terms of forces between structural units why (a) \(\mathrm{Br}_{2}\) has a lower melting point than \(\mathrm{NaBr}\). (b) \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}\) has a higher boiling point than butane, \(\mathrm{C}_{4} \mathrm{H}_{10}\). (c) \(\mathrm{H}_{2} \mathrm{O}\) has a higher boiling point than \(\mathrm{H}_{2} \mathrm{Te}\). (d) Acetic acid \(\mathrm{CH}_{3}-\mathrm{C}-\mathrm{OH}\) has a lower boiling point

A flask with a volume of \(10.0\) L contains \(0.400 \mathrm{~g}\) of hydrogen gas and \(3.20 \mathrm{~g}\) of oxygen gas. The mixture is ignited and the reaction $$ 2 \mathrm{H}_{2}(\mathrm{~g})+\mathrm{O}_{2}(\mathrm{~g}) \longrightarrow 2 \mathrm{H}_{2} \mathrm{O} $$ goes to completion. The mixture is cooled to \(27^{\circ} \mathrm{C}\). Assuming \(100 \%\) yield, (a) What physical state(s) of water is (are) present in the flask? (b) What is the final pressure in the flask? (c) What is the pressure in the flask if \(3.2 \mathrm{~g}\) of each gas is used?

Mt. McKinley in Alaska has an altitude of \(20,320 \mathrm{ft} .\) Water \(\left(\Delta H_{\mathrm{vap}}=\right.\) \(40.7 \mathrm{~kJ} / \mathrm{mol}\) ) boils at \(77^{\circ} \mathrm{C}\) atop Mt. McKinley. What is the normal atmospheric pressure at the summit?

For each of the following pairs, choose the member with the lower boiling point. Explain your reason in each case. (a) \(\mathrm{NaCl}\) or \(\mathrm{PCl}_{3}\) (b) \(\mathrm{NH}_{3}\) or \(\mathrm{AsH}_{3}\) (c) \(\mathrm{C}_{3} \mathrm{H}_{7} \mathrm{OH}\) or \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OCH}_{3}\) (d) \(\mathrm{HI}(g)\) or \(\mathrm{HCl}(g)\)
See all solutions

Recommended explanations on Chemistry Textbooks

Chemical Reactions

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Kinetics

Read Explanation

Chemistry Branches

Read Explanation

The Earths Atmosphere

Read Explanation

Nuclear Chemistry

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free