Interpretation:
The value of equilibrium constant
Concept introduction:
The acids that do not undergo complete dissociation when dissolved in water are known as weak acids. The equilibrium constant in the case of dissociation of a weak acid is known as the acid constant and is denoted by
Answer to Problem 19PE
The value of equilibrium constant
Explanation of Solution
The equilibrium reaction is shown below.
The volume of the reaction chamber is
The formula to calculate the molar concentration of the compounds is given below.
Substitute the value of initial number of moles of
Substitute the value of initial number of moles of
Substitute the value of final number of moles of
The change in concentration of
Substitute the values of final and initial concentrations of
The negative sign indicates that the concentration of
According to the equilibrium reaction,
The ICE table for the given reaction is shown below.
The value of
Substitute the values of concentrations of
Therefore, the value of
The value of equilibrium constant
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Chapter 18 Solutions
Introductory Chemistry: An Active Learning Approach
- Write equilibrium constant expressions for the following reactions. For gases, use either pressures or concentrations. (a) 2 H2O2(g) 2 H2O(g) + O2(g) (b) CO(g) + O2g CO2(g) (c) C(s) + CO2(g) 2 CO(g) (d) NiO(s) + CO(g) Ni(s) + CO2(g)arrow_forwardConsider the system 4NH3(g)+3O2(g)2N2(g)+6H2O(l)H=1530.4kJ (a) How will the concentration of ammonia at equilibrium be affected by (1) removing O2(g)? (2) adding N2(g)? (3) adding water? (4) expanding the container? (5) increasing the temperature? (b) Which of the above factors will increase the value of K? Which will decrease it?arrow_forwardConsider 0.200 mol phosphorus pentachloride sealed in a 2.0-L container at 620 K. The equilibrium constant, Kc, is 0.60 for PCl5(g) PCl3(g) + Cl2(g) Calculate the concentrations of all species after equilibrium has been reached.arrow_forward
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