Concept explainers
Calculate K for the reactions in Question 2.
(a)
Interpretation:
The value of K needs to be calculated for the net ionic equation for reaction between aqueous solution of sodium acetate and nitric acid.
Concept Introduction :
The relationship between the concentration of products and reactants at equilibrium for a general reaction:
Where A, B, C, and D represents chemical species and a, b, c, and d are the coefficients for balanced reaction.
The equilibrium expression, Kc for reversible reaction is determined by multiplying the concentrations of products together and divided by the concentrations of the reactants. Each concentration is raised to the power that is equal to the coefficient in the balanced reaction. So, the expression is:
Square brackets represent the concentration.
Answer to Problem 6QAP
Explanation of Solution
The net ionic reaction between aqueous solution of sodium acetate and nitric acid is as follows:
Since, for
As the required reaction is inverse of the dissociation reaction of
Substitute the value in the above expression as follows:
Therefore, the value of K is
(b)
Interpretation:
The value of K needs to be calculated for the net ionic equation for reaction between aqueous solution of hydrobromic acid and strontium hydroxide.
Concept Introduction :
The relationship between the concentration of products and reactants at equilibrium for a general reaction:
Where A, B, C, and D represents chemical species and a, b, c, and d are the coefficients for balanced reaction.
The equilibrium expression, Kc for reversible reaction is determined by multiplying the concentrations of products together and divided by the concentrations of the reactants. Each concentration is raised to the power that is equal to the coefficient in the balanced reaction. So, the expression is:
Square brackets represent the concentration.
Answer to Problem 6QAP
Explanation of Solution
The net ionic equation for the reaction between hydrobromic acid and strontium hydroxide is as follows:
Since, for
As the required reaction is inverse of the dissociation reaction of
Substituting the value in the above expression as below:
Therefore, the value of K is
(c)
Interpretation:
The value of K needs to be calculated for the net ionic equation for reaction between aqueous solution of hypochlorous acid and sodium cyanide.
Concept Introduction :
The relationship between the concentration of products and reactants at equilibrium for a general reaction:
Where A, B, C, and D represents chemical species and a, b, c, and d are the coefficients for balanced reaction.
The equilibrium expression, Kc for reversible reaction is determined by multiplying the concentrations of products together and divided by the concentrations of the reactants. Each concentration is raised to the power that is equal to the coefficient in the balanced reaction. So, the expression is:
Square brackets represent the concentration.
Answer to Problem 6QAP
48
Explanation of Solution
The net ionic equation for the reaction between Hypochlorous acid and sodium cyanide is as below:
Since, for
As the required reaction of HCN is inverse of the dissociation reaction of HCN so, the expression of K for this reaction is as follows:
Substituting the value in the above expression as follows:
=
The K value is 48.
(d)
Interpretation:
The value of K needs to be calculated for the net ionic equation for reaction between aqueous solution of sodium hydroxide and nitrous acid.
Concept Introduction :
The relationship between the concentration of products and reactants at equilibrium for a general reaction:
Where A, B, C, and D represents chemical species and a, b, c, and d are the coefficients for balanced reaction.
The equilibrium expression, Kc for reversible reaction is determined by multiplying the concentrations of products together and divided by the concentrations of the reactants. Each concentration is raised to the power that is equal to the coefficient in the balanced reaction. So, the expression is:
Square brackets represent the concentration.
Answer to Problem 6QAP
Explanation of Solution
The net ionic equation for the reaction between sodium hydroxide and nitrous acid is as below:
The expression of K for this reaction is:
The Kb value for NO2- is
The K value is
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Chapter 14 Solutions
EBK CHEMISTRY: PRINCIPLES AND REACTIONS
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