Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 12: Problem 101

Which statement correctly describes a difference between graphene and graphite? (a) Graphene is a molecule but graphite is not. (b) Graphene is a single sheet of carbon atoms and graphite contains many, and larger, sheets of carbon atoms. (c) Graphene is an insulator but graphite is a metal. (d) Graphite is pure carbon but graphene is not. \((\mathbf{e})\) The carbons are $s p^{2}\( hybridized in graphene but \)s p^{3}$ hybridized in graphite.

Short Answer

Expert verified
(b) Graphene is a single sheet of carbon atoms and graphite contains many, and larger, sheets of carbon atoms.

Step by step solution

01

Option (a): Graphene is a molecule but graphite is not.

This statement isn't accurate. Graphene is a single layer of carbon atoms arranged in a hexagonal lattice, and it's a building block of graphite. Both graphene and graphite are made up of carbon atoms, but they have different structures.
02

Option (b): Graphene is a single sheet of carbon atoms and graphite contains many, and larger, sheets of carbon atoms.

This statement is accurate. Graphene indeed is a single layer of carbon atoms arranged in a hexagonal lattice. Graphite, on the other hand, is made up of many layers (sheets) of graphene tightly stacked on top of one another.
03

Option (c): Graphene is an insulator but graphite is a metal.

This statement is not accurate. Both graphene and graphite are good conductors of electricity, so neither is an insulator. However, it is important to note that graphite is not considered a metal, but rather a semi-metal or a good electrical conductor.
04

Option (d): Graphite is pure carbon but graphene is not.

This statement is not accurate. Both graphene and graphite consist solely of carbon atoms with different arrangements. Graphene has a hexagonal lattice arrangement, while graphite consists of multiple layers of graphene stacked together.
05

Option (e): The carbons are \(sp^{2}\) hybridized in graphene but \(sp^{3}\) hybridized in graphite.

This statement is not accurate. The carbon atoms in both graphene and graphite are \(sp^{2}\) hybridized. The \(sp^{2}\) hybridization in graphene and graphite allows the formation of a hexagonal lattice structure and a planar, stable configuration. Taking the analysis into account: The correct statement that describes the difference between graphene and graphite is:
06

Answer

(b) Graphene is a single sheet of carbon atoms and graphite contains many, and larger, sheets of carbon atoms.

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

Unlike metals, semiconductors increase their conductivity as you heat them (up to a point). Suggest an explanation.

Sodium oxide \(\left(\mathrm{Na}_{2} \mathrm{O}\right)\) adopts a cubic structure with \(\mathrm{Na}\) atoms represented by green spheres and \(\mathrm{O}\) atoms by red spheres. (a) How many atoms of each type are there in the unit cell? (b) Determine the coordination number and describe the shape of the coordination environment for the sodium ion. (c) The unit cell edge length is \(555 \mathrm{pm}\). Determine the density of \(\mathrm{Na}_{2} \mathrm{O}\)

Indicate whether each statement is true or false: (a) Intermetallic compounds have a fixed composition. (b) Copper is the majority component in both brass and bronze. (c) In stainless steel, the chromium atoms occupy interstitial positions.

For each of the following alloy compositions, indicate whether you would expect it to be a substitutional alloy, an interstitial alloy, or an intermetallic compound: (a) \(\mathrm{Cu}_{0.66} \mathrm{Zn}_{0.34}\) (b) \(\mathrm{Ag}_{3} \mathrm{Sn}\) (c) \(\mathrm{Ti}_{0.99} \mathrm{O}_{0.01}\)

Selected chlorides have the following melting points: \(\mathrm{NaCl}\) $\left(801^{\circ} \mathrm{C}\right), \mathrm{MgCl}_{2}\left(714^{\circ} \mathrm{C}\right), \mathrm{PCl}_{3}\left(-94^{\circ} \mathrm{C}\right), \mathrm{SCl}_{2}\left(-121^{\circ} \mathrm{C}\right)$ (a) For each compound, indicate what type its solid form is (molecular, metallic, ionic, or covalent-network). (b) Predict which of the following compounds has a higher melting point: \(\mathrm{CaCl}_{2}\) or \(\mathrm{SiCl}_{4}\).
See all solutions

Recommended explanations on Chemistry Textbooks

Nuclear Chemistry

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Chemistry Branches

Read Explanation

Making Measurements

Read Explanation

Chemical Reactions

Read Explanation

Chemical Analysis

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