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What is a change in concentration of a reactant or product over time?
The change in concentration of a reactant or product over time is known as the reaction rate. It is a measure of how quickly reactants are consumed or products are formed during a chemical reaction. This rate is typically expressed as the change in concentration per unit time.
How we calculate the ka from the original equation?
To calculate the acid dissociation constant (Ka) from the original equation, you can use the equilibrium expression that represents the dissociation of the acid and the concentrations of the products and reactants at equilibrium. Ka is equal to the concentration of the products divided by the concentration of the reactants at equilibrium. This value can provide information about the strength of the acid.
What term refers to the condition in which the concentration of the reactants and products remains constant over time?
Chemical equilibrium describes a state in which the concentrations of reactants and products in a reversible chemical reaction remain constant over time. At equilibrium, the rate of the forward reaction is equal to the rate of the reverse reaction.
Why are there more products than reactants after establishing equilibirium?
When a reaction reaches equilibrium, it means the rates of the forward and reverse reactions are equal. If there are more products present than reactants at equilibrium, it suggests that the equilibrium position favors the formation of products over reactants. This could be due to factors such as temperature, pressure, concentration, or the nature of the reaction itself.
How many reaction rates be measured?
The reaction rate can typically be measured by determining the change in concentration of reactants or products over a certain time period. Depending on the specific reaction and conditions, it is possible to measure multiple reaction rates simultaneously, involving different reactants or products. Each reaction rate will depend on factors such as concentration, temperature, pressure, and catalyst presence.
Why does the reaction decrease as the reaction progresses?
There are fewer reactants left to collide.
What of the following characterizes reaction at equilibrium?
At equilibrium, the rate of the forward reaction is equal to the rate of the reverse reaction, resulting in a constant concentration of reactants and products. The system is in a state of balance, where the concentrations of reactants and products remain constant over time.
What is a change in concentration of a reactant or product over time?
The change in concentration of a reactant or product over time is known as the reaction rate. It is a measure of how quickly reactants are consumed or products are formed during a chemical reaction. This rate is typically expressed as the change in concentration per unit time.
How can one calculate the initial rate of reaction from concentration?
To calculate the initial rate of reaction from concentration, you can use the rate equation. This equation relates the rate of reaction to the concentrations of the reactants. By measuring the change in concentration of the reactants over a short period of time at the beginning of the reaction, you can determine the initial rate of reaction.
How we calculate the ka from the original equation?
To calculate the acid dissociation constant (Ka) from the original equation, you can use the equilibrium expression that represents the dissociation of the acid and the concentrations of the products and reactants at equilibrium. Ka is equal to the concentration of the products divided by the concentration of the reactants at equilibrium. This value can provide information about the strength of the acid.
What does it mean keq 1?
Keq = 1 indicates that the system is in equilibrium, meaning the rate of the forward reaction is equal to the rate of the reverse reaction. This implies that the concentration of products and reactants in the reaction mixture are stable and not changing over time.
What is the order of a reaction if the graph is curve horizontal?
If the graph of a reaction's concentration versus time is a horizontal curve, it indicates that the concentration of the reactant is not changing over time, suggesting that the reaction has reached completion or is at equilibrium. This typically corresponds to a zero-order reaction, where the rate of reaction is constant and independent of the concentration of the reactants. In such cases, the rate remains constant until the reactants are depleted.
What happened to the rate of a reaction as the reaction progresses?
In general, and depending on the order of the reaction, the rate will decrease as the reaction progresses.
What does it mean if keq is more than 1?
If the equilibrium constant (Kₑq) is greater than 1, it indicates that the concentration of products is higher than the reactants at equilibrium. This suggests that the forward reaction is favored and the equilibrium lies to the right, meaning more products are being formed.
What is the correct statement of the equilibrium?
The correct statement of equilibrium is that the rates of the forward and reverse reactions are equal, leading to a constant concentration of reactants and products over time.
Are the products favored over the reactants or the reactants favored over the products?
The products are favored over the reactants if the reaction is exothermic, releasing energy. Conversely, the reactants are favored over the products if the reaction is endothermic, requiring energy input.
How do you calculate the initial rate of a reaction?
The initial rate of a reaction is calculated by measuring the change in concentration of reactants over time at the beginning of the reaction. This is done by dividing the change in concentration by the change in time. The initial rate is typically expressed in units of concentration per unit time.
