BuyFindarrow_forward

Chemistry & Chemical Reactivity

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

Solutions

Chapter
Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

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

Cloth can be waterproofed by coating it with a silicone layer. This is done by exposing the cloth to (CH3)2SiCl2 vapor. The silicon compound reacts with OH groups on the doth to form a waterproofing film (density = 1.0 g/cm3) of [(CH3)2SiO]n, where n is a large integer number.

n (CH3)2SiCl2 + 2n OH → 2n Cl + n H2O + [(CH3)2SiO]n

The coating is added layer by layer, with each layer of [(CH3)2SiO]n being 0.60 nm thick. Suppose you want to waterproof a piece of doth that is 3.00 square meters, and you want 250 layers of waterproofing compound on the cloth. What mass of (CH3)2SiCl2 do you need?

Interpretation Introduction

Interpretation:

The mass of (CH3)2SiCl2 needed to waterproof the given quantity of material has to be calculated.

Concept introduction:

  • The mass of any material can be determined from its volume and density.  The mathematical relationship between mass, volume and density of material is,

  Mass=Density×volume

  • For chemical reaction balanced chemical equation is written in accordance with the Law of conservation of mass.
  • Law of conservation of mass states that for a reaction total mass of the reactant and product must be equal.
Explanation

Cloth can be waterproofed by coating it with a silicone layer and it is done by exposing the cloth to (CH3)2SiCl2 vapor.

The silicon compound reacts with OH groups on the cloth to form a waterproofing film of [(CH3)2SiO]n where n is a large integer number.

The balanced equation for this reaction is,

  n(CH3)2SiCl2+2nOH-2nCl-+nH2O+[(CH3)2SiO]n

The coating is added layer by layer, with each layer of [(CH3)2SiO]n being 0.60nm thick.

For 250 coats total thickness will be 0.6nm×250=150nmthick

    1nm=1×10-7m150nm

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started
Sect-4.8 P-4.11CYUSect-4.8 P-4.12CYUSect-4.8 P-4.13CYUSect-4.9 P-4.14CYUSect-4.9 P-1.1ACPSect-4.9 P-2.1ACPSect-4.9 P-3.1ACPSect-4.9 P-4.1ACPSect-4.9 P-4.2ACPSect-4.9 P-4.3ACPSect-4.9 P-4.4ACPCh-4 P-1PSCh-4 P-2PSCh-4 P-3PSCh-4 P-4PSCh-4 P-5PSCh-4 P-6PSCh-4 P-7PSCh-4 P-8PSCh-4 P-9PSCh-4 P-10PSCh-4 P-11PSCh-4 P-12PSCh-4 P-13PSCh-4 P-14PSCh-4 P-15PSCh-4 P-16PSCh-4 P-17PSCh-4 P-18PSCh-4 P-19PSCh-4 P-20PSCh-4 P-21PSCh-4 P-22PSCh-4 P-23PSCh-4 P-24PSCh-4 P-25PSCh-4 P-26PSCh-4 P-27PSCh-4 P-28PSCh-4 P-29PSCh-4 P-30PSCh-4 P-31PSCh-4 P-32PSCh-4 P-33PSCh-4 P-34PSCh-4 P-35PSCh-4 P-36PSCh-4 P-37PSCh-4 P-38PSCh-4 P-39PSCh-4 P-40PSCh-4 P-41PSCh-4 P-42PSCh-4 P-43PSCh-4 P-44PSCh-4 P-45PSCh-4 P-46PSCh-4 P-47PSCh-4 P-48PSCh-4 P-49PSCh-4 P-50PSCh-4 P-51PSCh-4 P-52PSCh-4 P-53PSCh-4 P-54PSCh-4 P-55PSCh-4 P-56PSCh-4 P-57PSCh-4 P-58PSCh-4 P-59PSCh-4 P-60PSCh-4 P-61PSCh-4 P-62PSCh-4 P-63PSCh-4 P-64PSCh-4 P-65PSCh-4 P-66PSCh-4 P-67PSCh-4 P-68PSCh-4 P-69PSCh-4 P-70PSCh-4 P-71PSCh-4 P-72PSCh-4 P-73PSCh-4 P-74PSCh-4 P-75PSCh-4 P-76PSCh-4 P-77PSCh-4 P-79GQCh-4 P-80GQCh-4 P-81GQCh-4 P-82GQCh-4 P-83GQCh-4 P-84GQCh-4 P-85GQCh-4 P-86GQCh-4 P-87GQCh-4 P-88GQCh-4 P-89GQCh-4 P-90GQCh-4 P-91GQCh-4 P-92GQCh-4 P-93GQCh-4 P-94GQCh-4 P-95GQCh-4 P-96GQCh-4 P-97GQCh-4 P-98GQCh-4 P-99GQCh-4 P-100GQCh-4 P-101GQCh-4 P-102GQCh-4 P-103GQCh-4 P-104GQCh-4 P-105GQCh-4 P-106GQCh-4 P-107GQCh-4 P-108GQCh-4 P-109GQCh-4 P-110GQCh-4 P-111GQCh-4 P-112GQCh-4 P-113GQCh-4 P-115GQCh-4 P-116GQCh-4 P-117GQCh-4 P-118GQCh-4 P-119GQCh-4 P-120GQCh-4 P-121ILCh-4 P-122ILCh-4 P-123ILCh-4 P-125ILCh-4 P-126ILCh-4 P-127ILCh-4 P-128ILCh-4 P-129ILCh-4 P-130ILCh-4 P-135SCQCh-4 P-136SCQCh-4 P-137SCQCh-4 P-139SCQCh-4 P-141SCQCh-4 P-142SCQ

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

To answer nutrition questions. a. watch for articles that include phrases such as "Now we know" or "The answer ...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

How might nutritional genomics influence health care in the future?

Understanding Nutrition (MindTap Course List)

Provide two reasons why meiosis leads to genetic variation in diploid organisms.

Human Heredity: Principles and Issues (MindTap Course List)

Explain what happens to the fMet initially put at the N-terminus.

Introduction to General, Organic and Biochemistry