When the reactions is at equilibrium, how does the rate of the forward reaction
ID: 1020631 • Letter: W
Question
When the reactions is at equilibrium, how does the rate of the forward reaction compare with the rate of the reverse reactions? If the equilibrium constant is large, will reactants or products dominate at equilibrium? How is the equilibrium constant for the forward reaction related to the equilibrium constant for the reverse reaction? What is the concentration of F^1- ion in a saturated solution of CaF_2(s)? Equilibrium is the condition where the forward and reverse reactions occur at equal rates. The pH scale is primarily a measure of corrosively, where 0 is non-corrosive, and 14 is very The pH scale has no relation to pOH scale. At 25 degree C, the pH and pOH add up to 14. High levels of hydrogen ion concentration occur at high pH values. The acid dissociation constant K_a is a numerical indication of how much the acid dissociate A polyphonic acid cannot have a conjugate base. At equilibrium, there must be equal concentrations of reactants and products. Temperature never has any effect on the equilibrium constant. A large value of the equilibrium constant implies that products are favored.Explanation / Answer
Q.14
a]
When the reaction is at equilibrium, how does the rate of the forward reaction compare with the rate of the reverse reaction?
When a reaction is at dynamic equilibrium, the rates of the forward and reverse reactions are, by definition, equal.
b]
If the equilibrium constant is large will reactant or products dominant at equilibrium
The value for equilibrium constant is large when products dominate the mixture. This implies that products are 'favored' over reactants.
The larger the value for the equilibrium constant the more the reaction goes to completion.
c]
How is the equilibrium constant for the forward reaction related to equilibrium constant for the reverse reaction?
In a chemical equilibrium, the forward and reverse reactions occur at equal rates, and the concentrations of products and reactants remain constant
Q.16
Equilibrium is the condition where the forward and reverse reactions occur at equal rates
It is true
The pH scale is primarily a measure of corrosivel , where 0 is non-corrosive and 14 is very
It is false
pH 7 indicate non-corrosive and or 0 and 14 is very corrosive
pH scale has no relation to pOH scale.
It is true
At 250C the pH and pOH add upto 14
It is true
High level of hydrogen ion concentration occur at high pH values
It is false
The acid dissociation constant Ka is a numerical indication of how much the acid dissociation
It is true
A polyprotic acid cannot have a conjugate base
It is false
At equilibrium, there must be equal concentration of reactant and products
It is false
In a chemical reaction, chemical equilibrium is the state in which the forward reaction rate and the reverse reaction rate are equal. The result of this equilibrium is that the concentrations of the reactants and the products do not change.
Temperature never has any effect on the equilibrium constant
It is false
A large value of the equilibrium constant implies that products are favored
It is true
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