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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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. Consider the following exothermic reaction at equilibrium:
N 2 ( g ) + 3H 2 ( g ) 2NH 3 ( g )    Predict how the following changes affect the number of moles of each component of the system after equilibrium is re-established by completing the table. Complete the table with the terms increase, decrease, or no change.

    N2 H2 NH3
    Add N2(g)
    Remove H2(g)
    Add NH3(g)
    Add Ne(g)
    (constant V)
    Increase the
    temperature
    Decrease the volume
    (constant T)
    Add a catalyst

Interpretation Introduction

Interpretation:

The changes affect the numbers of moles of each component of the system after equilibrium is reestablished are to be predicted. The given table with the terms increase, decrease or no change is to be completed.

Concept Introduction:

The equilibrium constant is a parameter which describes the relationship between concentration of the reactants and the products at equilibrium stage. Equilibrium constant of a reaction is expressed by the ratio of concentration of product species raised to the power of their stoichiometric coefficients to the concentration of reactant species raised to the power of their stoichiometric coefficients.

According to the Le Chatelier’s principle the change in concentration, volume, pressure and temperature affects the equilibrium constant of the reaction. The equilibrium shifts in such a way or a direction that it reduces the effect of change.

Explanation

The given exothermic reaction is,

N2g+3H2g2NH3g

In the given reaction, the nitrogen gas reacts with hydrogen gas which results in the formation of ammonia as product.

In the second row of the table, the reactant N2 is added which results in the shifting of equilibrium in the forward direction. Hence, the concentration of N2 and NH3 increases while the concentration of H2 decreases.

In the third row of the table, the reactant H2 is removed which results in the shifting of equilibrium in the backward direction. Hence, the concentration of H2 and NH3 decreases while the concentration of N2 increases.

In the fourth row of the table, the product NH3 is added which results in the shifting of equilibrium in the backward direction. Hence, the concentration of N2 and H2 increases.

In the fifth row of the table, neon gas is an inert gas. Therefore, it will not affect the concentration of reactants as well as the product. Hence, there will be no change in the concentration of reactants and products.

In the sixth row of the table, the increase in temperature of the exothermic reaction will shift the equilibrium in the backward direction. Therefore, the more amount of reactant will be formed. Hence, the concentration of N2 and H2 increases while the concentration of NH3 decreases

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Ch-17 P-1ALQCh-17 P-2ALQCh-17 P-3ALQCh-17 P-4ALQCh-17 P-5ALQCh-17 P-6ALQCh-17 P-7ALQCh-17 P-8ALQCh-17 P-9ALQCh-17 P-10ALQCh-17 P-11ALQCh-17 P-12ALQCh-17 P-13ALQCh-17 P-14ALQCh-17 P-1QAPCh-17 P-2QAPCh-17 P-3QAPCh-17 P-4QAPCh-17 P-5QAPCh-17 P-6QAPCh-17 P-7QAPCh-17 P-8QAPCh-17 P-9QAPCh-17 P-10QAPCh-17 P-11QAPCh-17 P-12QAPCh-17 P-13QAPCh-17 P-14QAPCh-17 P-15QAPCh-17 P-16QAPCh-17 P-17QAPCh-17 P-18QAPCh-17 P-19QAPCh-17 P-20QAPCh-17 P-21QAPCh-17 P-22QAPCh-17 P-23QAPCh-17 P-24QAPCh-17 P-25QAPCh-17 P-26QAPCh-17 P-27QAPCh-17 P-28QAPCh-17 P-29QAPCh-17 P-30QAPCh-17 P-31QAPCh-17 P-32QAPCh-17 P-33QAPCh-17 P-34QAPCh-17 P-35QAPCh-17 P-36QAPCh-17 P-37QAPCh-17 P-38QAPCh-17 P-39QAPCh-17 P-40QAPCh-17 P-41QAPCh-17 P-42QAPCh-17 P-43QAPCh-17 P-44QAPCh-17 P-45QAPCh-17 P-46QAPCh-17 P-47QAPCh-17 P-48QAPCh-17 P-49QAPCh-17 P-50QAPCh-17 P-51QAPCh-17 P-52QAPCh-17 P-53QAPCh-17 P-54QAPCh-17 P-55QAPCh-17 P-56QAPCh-17 P-57QAPCh-17 P-58QAPCh-17 P-59QAPCh-17 P-60QAPCh-17 P-61QAPCh-17 P-62QAPCh-17 P-63QAPCh-17 P-64QAPCh-17 P-65QAPCh-17 P-66QAPCh-17 P-67QAPCh-17 P-68QAPCh-17 P-69QAPCh-17 P-70QAPCh-17 P-71APCh-17 P-72APCh-17 P-73APCh-17 P-74APCh-17 P-75APCh-17 P-76APCh-17 P-77APCh-17 P-78APCh-17 P-79APCh-17 P-80APCh-17 P-81APCh-17 P-82APCh-17 P-83APCh-17 P-84APCh-17 P-85APCh-17 P-86APCh-17 P-87APCh-17 P-88APCh-17 P-89APCh-17 P-90APCh-17 P-91APCh-17 P-92APCh-17 P-93APCh-17 P-94APCh-17 P-95APCh-17 P-96APCh-17 P-97APCh-17 P-98APCh-17 P-99APCh-17 P-100APCh-17 P-101APCh-17 P-102APCh-17 P-103APCh-17 P-104APCh-17 P-105APCh-17 P-106APCh-17 P-107APCh-17 P-108APCh-17 P-109APCh-17 P-110APCh-17 P-111APCh-17 P-112APCh-17 P-113APCh-17 P-114APCh-17 P-115APCh-17 P-116APCh-17 P-117APCh-17 P-118APCh-17 P-119APCh-17 P-120CPCh-17 P-121CPCh-17 P-122CPCh-17 P-123CPCh-17 P-124CPCh-17 P-125CPCh-17 P-126CPCh-17 P-1CRCh-17 P-2CRCh-17 P-3CRCh-17 P-4CRCh-17 P-5CRCh-17 P-6CRCh-17 P-7CRCh-17 P-8CRCh-17 P-9CRCh-17 P-10CRCh-17 P-11CRCh-17 P-12CRCh-17 P-13CRCh-17 P-14CRCh-17 P-15CRCh-17 P-16CRCh-17 P-17CRCh-17 P-18CRCh-17 P-19CRCh-17 P-20CRCh-17 P-21CRCh-17 P-22CRCh-17 P-23CRCh-17 P-24CR

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