What 4 things affect the rate of reaction?
There are four factors that affect the rate (speed) of a chemical reaction:
- temperature.
- concentration.
- particle size.
- use of a catalyst.
Which change will cause the greatest increase in the reaction rate?
catalyst
Why is equilibrium constant not affected by concentration?
As detailed in the above section, the position of equilibrium for a given reaction does not depend on the starting concentrations and so the value of the equilibrium constant is truly constant. This is because equilibrium is defined as a condition resulting from the rates of forward and reverse reactions being equal.
What does it mean if the equilibrium constant is greater than 1?
The equilibrium constant expression is a mathematical relationship that shows how the concentrations of the products vary with the concentration of the reactants. If the value of K is greater than 1, the products in the reaction are favored. If K is equal to 1, neither reactants nor products are favored.
What happens if QC is greater than KC?
When Qc is more than Kc, reactants would be formed to get that ratio back to equilibrium. When Qc is less than Kc, products would be formed to get the ratio up to equilbrium. When they are equal, it’s at equilibrium.
What happens when the equilibrium constant is less than 1?
A small equilibrium constant, or when Keq is less than one, means that the chemical reaction will favor the reactants and the reaction will proceed in the opposite direction. An equilibrium constant of 1 indicates that the reactants and products will be equal when the reaction reaches equilibrium.
Why is equilibrium constant not negative?
When Kc is less than 1, reactants exceed products. When much less than 1 (Kc can never be negative…so when it is close to zero) the reaction hardly occurs at all. 8.2.
How much reaction is complete when KC equals 1?
100% because when Kc is equal to 1 it means they are completed. 50% bcz Kc is equals to 1 which means reaction is not fully complete it is halfway. If Kc is greater than 1 then reaction will be forward but if less than one than reaction will be backward so here reaction is in between forward and backward.
How do you know if a reaction is forward or reverse?
Q can be used to determine which direction a reaction will shift to reach equilibrium. If K > Q, a reaction will proceed forward, converting reactants into products. If K < Q, the reaction will proceed in the reverse direction, converting products into reactants.
What is K in a rate law?
A rate law is an expression showing the relationship of the reaction rate to the concentrations of each reactant. The specific rate constant (k) is the proportionality constant relating the rate of the reaction to the concentrations of reactants. The value of the rate constant is temperature dependent.
How do you find K in equilibrium?
To determine K for a reaction that is the sum of two or more reactions, add the reactions but multiply the equilibrium constants. The following reactions occur at 1200°C: CO(g)+3H2(g)⇌CH4(g)+H2O(g) K1=9.17×10−2.
What is the difference between Q and K in equilibrium?
Re: Difference between Q and K. The difference between K and Q is that, K is the constant of a certain reaction when it is in equilibrium, while Q is the quotient of activities of products and reactants at any stage of a reaction. Therefore, by comparing Q and K, we can determine the direction of a reaction.