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Chemistry

10th Edition
Steven S. Zumdahl + 2 others
ISBN: 9781305957404

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BuyFindarrow_forward

Chemistry

10th Edition
Steven S. Zumdahl + 2 others
ISBN: 9781305957404
Textbook Problem

One method of preparing elemental mercury involves roasting cinnabar (HgS) in quicklime (CaO) at 600.°C followed by condensation of the mercury vapor. Given the heat of vaporization of mercury (296 J/g) and the vapor pressure of mercury at 25.0°C (2.56 × 10−3 torr), what is the vapor pressure of the condensed mercury at 300.°c? How many atoms of mercury are present in the mercury vapor at 300.°c if the reaction is conducted in a closed 15.0-L container?

Interpretation Introduction

Interpretation

At 300°C the vapor pressure of condensed Mercury and number of Mercury atoms in Mercury vapor to be calculated.

Concept Introduction

Vapor pressure: In a closed system, at given temperature the pressure evolved by a vapor in thermodynamic equilibrium with its solid or liquid phases (condensed phase).

ln(P1P2)ΔHVapR[1T2-1T1]

Where,

P1 and P2 arepressure;T1 and T2 are Temperature.

Ideal gas law: This law expressed by following equation is,

PV = nRT

Where,

P - PressureV - volumen - Number of molesR - GasconstantT -Temperature

Explanation

Explanation

Record the given data

Temperature involved in preparing elemental Mercury = 600°C

Heat of vaporisation of Mercury = 296J/g

Vapour pressure of Mercury = 2.56×10-3 at 25°C

Temperature involved in preparing elemental Mercury, heat of vaporization and vapor pressure of Mercury are recorded as shown.

To calculate molality of Mercury.

ln(P1P2)ΔHVapR[1T2-1T1]

            = 296Jg× 200.6gmol= 5.94×104J/mol Mercury

By plugging the value of heat of vaporization of Mercury and temperature, a mole of Mercury has calculated.

calculate vapor pressure of condensed Mercury.

ln[2.56×10-3 torrP2]=5.94×104J/mol8

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Chapter 10 Solutions

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Ch-10 P-1ALQCh-10 P-2ALQCh-10 P-3ALQCh-10 P-4ALQCh-10 P-5ALQCh-10 P-6ALQCh-10 P-7ALQCh-10 P-8ALQCh-10 P-9ALQCh-10 P-10ALQCh-10 P-11ALQCh-10 P-12ALQCh-10 P-13ALQCh-10 P-15QCh-10 P-16QCh-10 P-17QCh-10 P-18QCh-10 P-19QCh-10 P-20QCh-10 P-21QCh-10 P-22QCh-10 P-23QCh-10 P-24QCh-10 P-25QCh-10 P-26QCh-10 P-27QCh-10 P-29QCh-10 P-30QCh-10 P-31QCh-10 P-32QCh-10 P-34QCh-10 P-35QCh-10 P-36QCh-10 P-37ECh-10 P-38ECh-10 P-39ECh-10 P-40ECh-10 P-41ECh-10 P-42ECh-10 P-43ECh-10 P-44ECh-10 P-45ECh-10 P-46ECh-10 P-47ECh-10 P-48ECh-10 P-49ECh-10 P-50ECh-10 P-51ECh-10 P-52ECh-10 P-53ECh-10 P-54ECh-10 P-55ECh-10 P-56ECh-10 P-57ECh-10 P-58ECh-10 P-59ECh-10 P-60ECh-10 P-61ECh-10 P-62ECh-10 P-63ECh-10 P-64ECh-10 P-65ECh-10 P-66ECh-10 P-67ECh-10 P-68ECh-10 P-69ECh-10 P-70ECh-10 P-71ECh-10 P-72ECh-10 P-73ECh-10 P-74ECh-10 P-75ECh-10 P-76ECh-10 P-77ECh-10 P-78ECh-10 P-79ECh-10 P-80ECh-10 P-81ECh-10 P-82ECh-10 P-83ECh-10 P-84ECh-10 P-85ECh-10 P-86ECh-10 P-87ECh-10 P-88ECh-10 P-89ECh-10 P-90ECh-10 P-91ECh-10 P-92ECh-10 P-93ECh-10 P-94ECh-10 P-95ECh-10 P-96ECh-10 P-97ECh-10 P-98ECh-10 P-99ECh-10 P-100ECh-10 P-101ECh-10 P-103ECh-10 P-104ECh-10 P-105ECh-10 P-106ECh-10 P-107ECh-10 P-108ECh-10 P-109ECh-10 P-110ECh-10 P-111AECh-10 P-112AECh-10 P-113AECh-10 P-114AECh-10 P-115AECh-10 P-116AECh-10 P-117AECh-10 P-118AECh-10 P-119AECh-10 P-120AECh-10 P-121AECh-10 P-122AECh-10 P-123AECh-10 P-124AECh-10 P-125AECh-10 P-126AECh-10 P-127AECh-10 P-128AECh-10 P-129AECh-10 P-131CWPCh-10 P-132CWPCh-10 P-133CWPCh-10 P-134CWPCh-10 P-135CWPCh-10 P-136CWPCh-10 P-137CWPCh-10 P-138CWPCh-10 P-139CWPCh-10 P-140CWPCh-10 P-141CPCh-10 P-142CPCh-10 P-143CPCh-10 P-144CPCh-10 P-145CPCh-10 P-146CPCh-10 P-147CPCh-10 P-148CPCh-10 P-149CPCh-10 P-150CPCh-10 P-151CPCh-10 P-152CPCh-10 P-153CPCh-10 P-154CPCh-10 P-155CPCh-10 P-156CPCh-10 P-157IPCh-10 P-158IPCh-10 P-159IPCh-10 P-160MP

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