Chemistry

9th Edition

Steven S. Zumdahl

ISBN: 9781133611097

Textbook Problem

At 25°C, K_p = 2.9 × 10^–3 for the reaction

NH 4 OCONH 2 ( s ) ⇌ 2 NH 3 ( g ) + CO 2 ( g )

In an experiment carried out at 25°C, a certain amount of NH₄OCONH₂ is placed in an evacuated rigid container and allowed to come to equilibrium. Calculate the total pressure in the container at equilibrium.

Interpretation Introduction

Interpretation:

The equilibrium constant for the decomposition reaction of NH4OCONH2(s) is given. The value of total equilibrium pressure is to be calculated.

Concept introduction:

The state when the reactants involved in a chemical reaction and the products formed in the reaction exist in concentrations having no further tendency to change is known as an equilibrium state of the reaction. When the equilibrium constant is expressed in terms of pressure, it is represented as Kp .

Explanation

Given

The equilibrium constant is 2.9×10−3 .

The stated reaction is,

NH4OCONH2(s)→2NH3(g)+CO2(g)

It is assumed that the initial pressure of reactant is x and change in pressure of CO2 is y .

The initial pressure of product is,

(PNH3)= 0(PCO2)= 0

On the reaction with one molecule of NH4OCONH2(s) , the equilibrium reaction is,

NH4OCONH2(s)→2NH3(g)CO2(g)Initial pressure :x0 atm0 atmChange (pressure) :-y2yyEquilibrium (pressure) :x-y2yy

At equilibrium, the equilibrium ratio is expressed by the formula,

Kp=Concentration of productsConcentration of reactants

Where,

Kp is the equilibrium constant

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Ch-13 P-1RQ Ch-13 P-2RQ Ch-13 P-3RQ Ch-13 P-4RQ Ch-13 P-5RQ Ch-13 P-6RQ Ch-13 P-7RQ Ch-13 P-8RQ Ch-13 P-9RQ Ch-13 P-10RQ

Ch-13 P-1ALQ Ch-13 P-2ALQ Ch-13 P-3ALQ Ch-13 P-4ALQ Ch-13 P-5ALQ Ch-13 P-6ALQ Ch-13 P-7ALQ Ch-13 P-8ALQ Ch-13 P-9ALQ Ch-13 P-10Q Ch-13 P-11Q Ch-13 P-12Q Ch-13 P-13Q Ch-13 P-14Q Ch-13 P-15Q Ch-13 P-16Q Ch-13 P-17Q Ch-13 P-18Q Ch-13 P-19Q Ch-13 P-20Q Ch-13 P-21E Ch-13 P-22E Ch-13 P-23E Ch-13 P-24E Ch-13 P-25E Ch-13 P-26E Ch-13 P-27E Ch-13 P-28E Ch-13 P-29E Ch-13 P-30E Ch-13 P-31E Ch-13 P-32E Ch-13 P-33E Ch-13 P-34E Ch-13 P-35E Ch-13 P-36E Ch-13 P-37E Ch-13 P-38E Ch-13 P-39E Ch-13 P-40E Ch-13 P-42E Ch-13 P-43E Ch-13 P-44E Ch-13 P-45E Ch-13 P-46E Ch-13 P-47E Ch-13 P-48E Ch-13 P-49E Ch-13 P-50E Ch-13 P-51E Ch-13 P-53E Ch-13 P-54E Ch-13 P-55E Ch-13 P-56E Ch-13 P-57E Ch-13 P-58E Ch-13 P-59E Ch-13 P-60E Ch-13 P-61E Ch-13 P-62E Ch-13 P-63E Ch-13 P-64E Ch-13 P-65E Ch-13 P-66E Ch-13 P-67E Ch-13 P-68E Ch-13 P-69E Ch-13 P-70E Ch-13 P-71AE Ch-13 P-72AE Ch-13 P-73AE Ch-13 P-74AE Ch-13 P-75AE Ch-13 P-76AE Ch-13 P-77AE Ch-13 P-78AE Ch-13 P-79AE Ch-13 P-80AE Ch-13 P-81AE Ch-13 P-82AE Ch-13 P-83AE Ch-13 P-84AE Ch-13 P-85AE Ch-13 P-86AE Ch-13 P-87AE Ch-13 P-88AE Ch-13 P-89AE Ch-13 P-90AE Ch-13 P-92CWP Ch-13 P-93CWP Ch-13 P-94CWP Ch-13 P-95CWP Ch-13 P-96CWP Ch-13 P-97CWP Ch-13 P-98CWP Ch-13 P-99CP Ch-13 P-100CP Ch-13 P-101CP Ch-13 P-102CP Ch-13 P-103CP Ch-13 P-104CP Ch-13 P-105CP Ch-13 P-106CP Ch-13 P-107CP Ch-13 P-108CP Ch-13 P-109CP Ch-13 P-110CP Ch-13 P-111CP Ch-13 P-112CP Ch-13 P-113CP Ch-13 P-114CP Ch-13 P-115IP Ch-13 P-116IP Ch-13 P-117IP Ch-13 P-118IP Ch-13 P-119MP

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