Concept explainers
(a)
Interpretation:
The mass of
(a)
Explanation of Solution
Balanced reaction is,
Mole of
Nickel metal in
The lowest mole is limiting reagent so Nickel is the reagent.
The mass of
Hence, the mass of
(b)
Interpretation:
The enthalpy change of decomposition reaction of
Concept Introduction:
Hess's Law:
The enthalpy change of given reaction is calculated by subtraction of sum of enthalpy of formation reactants from sum of enthalpy of formation reactant products.
(b)
Explanation of Solution
Balanced reaction is,
The standard formation enthalpy of
The enthalpy change of decomposition reaction of
(c)
Interpretation:
It has to be predicted whether there is an increase or a decrease in entropy when this reaction occurs.
(c)
Explanation of Solution
Given reaction is,
The mole of product is increases, when entropy of the forward reaction is increased.
In the given reaction, 5 mole of products formed from 1 mole of reactant so entropy is increased in the given reaction.
(d-i)
Interpretation:
The equilibrium concentration of
Concept Introduction:
Equilibrium constant
Equilibrium constant
Consider the reaction where A reacts to give B.
On rearranging,
Where,
(d-i)
Explanation of Solution
Given reaction is,
ICE table for at given condition with given concentrations,
At equilibrium,
Hence, the equilibrium concentration of
(d-ii)
Interpretation:
The value of the equilibrium constant
Concept Introduction:
Refer part (d-i).
(d-ii)
Explanation of Solution
Given reaction is,
ICE table for at given condition with given concentrations,
At equilibrium,
Hence, the value of equilibrium constant
(d-iii)
Interpretation:
The value of the equilibrium constant
(d-iii)
Explanation of Solution
Given reaction is,
The relationship between
In the given balanced reaction, mole change, temperature and
The value of equilibrium constant
Hence, the value of equilibrium constant
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Chapter 12 Solutions
Chemistry: The Molecular Science
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