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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

One material needed to make silicones is dichlorodimethylsilane, (CH3)2SiCl2. It is made by treating silicon powder at about 300 °C. with CH3Cl in the presence of a copper-containing catalyst.

(a) Write a balanced equation for the reaction.

(b) Assume you carry out the reaction on a small scale with 2.65 g of silicon. To measure the CH3Cl gas, you fill a 5.60-L flask at 24.5 °C. What pressure of CH3Cl gas must you have in the flask to have the stoichiometrically correct amount of the compound?

(c) What mass of (CH3)2SiCl2 can be produced from 2.65 g of Si and excess CH3Cl?

(a)

Interpretation Introduction

Interpretation:

To write the balanced chemical equation for the reaction of CH3Cl(g) and silicon

Concept introduction:

A chemical equation consists of reactants and products. The two are separated by an arrow. Each substances of reactants and products are separated from other by a plus sign. The reactants lies on left hand side while products lies on right hand side of the reaction.

A balanced chemical equation occurs when the number of atoms in reactant side is equal to the number of atoms in the product side.

Explanation

The formula for  dichloromethylsilane is (CH3)2SiCl2. It is formed by the reaction of CH3Cl(g) and Si(s). Silicon powder is made to react with CH3Cl(g) at a temperature of 300 °C in the presence of copper as a catalyst.

Two moles of CH3Cl(g) are reacting with one mole of Si(s)

(b)

Interpretation Introduction

Interpretation:

The pressure of CH3Cl(g) in the flask has to be  calculated.

Concept introduction:

Silicons are prepared by using dichloromethylsilane. The formula for  dichloromethylsilane is (CH3)2SiCl2. It is formed by the reaction of CH3Cl(g) and Si(s). Silicon powder is made to react with CH3Cl(g) at a temperature of 300 °C in the presence of copper as a catalyst.

According to ideal gas equation,

pV=nRT

Numberofmoles=MassMolarmass

(c)

Interpretation Introduction

Interpretation:

The mass of (CH3)2SiCl2 produced in the reaction has to be determined.

Concept introduction:

Silicons are prepared by using dichloromethylsilane. The formula for  dichloromethylsilane is (CH3)2SiCl2. It is formed by the reaction of CH3Cl(g) and Si(s). Silicon powder is made to react with CH3Cl(g) at a temperature of 300 °C in the presence of copper as a catalyst.

Mass=Numberofmoles×Molecularmass

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Chapter 21 Solutions

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Sect-21.11 P-2.4ACPSect-21.11 P-2.5ACPCh-21 P-1PSCh-21 P-2PSCh-21 P-3PSCh-21 P-4PSCh-21 P-5PSCh-21 P-6PSCh-21 P-7PSCh-21 P-8PSCh-21 P-9PSCh-21 P-10PSCh-21 P-11PSCh-21 P-12PSCh-21 P-13PSCh-21 P-14PSCh-21 P-15PSCh-21 P-16PSCh-21 P-17PSCh-21 P-18PSCh-21 P-19PSCh-21 P-20PSCh-21 P-21PSCh-21 P-22PSCh-21 P-23PSCh-21 P-24PSCh-21 P-25PSCh-21 P-26PSCh-21 P-27PSCh-21 P-28PSCh-21 P-29PSCh-21 P-30PSCh-21 P-31PSCh-21 P-32PSCh-21 P-33PSCh-21 P-34PSCh-21 P-35PSCh-21 P-36PSCh-21 P-37PSCh-21 P-38PSCh-21 P-39PSCh-21 P-40PSCh-21 P-41PSCh-21 P-42PSCh-21 P-43PSCh-21 P-44PSCh-21 P-45PSCh-21 P-46PSCh-21 P-47PSCh-21 P-48PSCh-21 P-49PSCh-21 P-50PSCh-21 P-51PSCh-21 P-52PSCh-21 P-53PSCh-21 P-54PSCh-21 P-55PSCh-21 P-56PSCh-21 P-57PSCh-21 P-58PSCh-21 P-59PSCh-21 P-60PSCh-21 P-61PSCh-21 P-62PSCh-21 P-63PSCh-21 P-64PSCh-21 P-65PSCh-21 P-66PSCh-21 P-67PSCh-21 P-68PSCh-21 P-69PSCh-21 P-70PSCh-21 P-71PSCh-21 P-72PSCh-21 P-73PSCh-21 P-74PSCh-21 P-75PSCh-21 P-76PSCh-21 P-77PSCh-21 P-78PSCh-21 P-79PSCh-21 P-80PSCh-21 P-81PSCh-21 P-82PSCh-21 P-83PSCh-21 P-84PSCh-21 P-85PSCh-21 P-86PSCh-21 P-87PSCh-21 P-88PSCh-21 P-89GQCh-21 P-90GQCh-21 P-91GQCh-21 P-92GQCh-21 P-93GQCh-21 P-94GQCh-21 P-95GQCh-21 P-96GQCh-21 P-97GQCh-21 P-98GQCh-21 P-99GQCh-21 P-100GQCh-21 P-101GQCh-21 P-102GQCh-21 P-103GQCh-21 P-105GQCh-21 P-106GQCh-21 P-107GQCh-21 P-108GQCh-21 P-110GQCh-21 P-111GQCh-21 P-112GQCh-21 P-113GQCh-21 P-114GQCh-21 P-115ILCh-21 P-116ILCh-21 P-117ILCh-21 P-118ILCh-21 P-119ILCh-21 P-120ILCh-21 P-121SCQCh-21 P-122SCQCh-21 P-123SCQCh-21 P-124SCQCh-21 P-125SCQCh-21 P-126SCQCh-21 P-127SCQCh-21 P-128SCQCh-21 P-129SCQCh-21 P-130SCQCh-21 P-131SCQ

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