- What affects the rate constant k?
- Why is rate of reaction not constant?
- Why does higher concentration increase the rate of reaction?
- What is the relationship between temperature and rate constant?
- What is the relationship between Q and K?
- Does equilibrium constant change with temperature?
- What is rate constant k?
- Does rate constant depend on pressure?
- Is rate constant dependent on concentration?
What affects the rate constant k?
An increase in temperature increases the rate constant and hence the rate.
An increase in concentration increases the rate but not the rate constant.
Temperature affects k and k affects R so, temperature affects both while concentration affects only Rate of reactions..
Why is rate of reaction not constant?
Rate of reaction does not remain constant during the complete reaction because rate depends upon the concentration of reactants which decreases with time.
Why does higher concentration increase the rate of reaction?
Increasing the concentration of one or more reactants will often increase the rate of reaction. This occurs because a higher concentration of a reactant will lead to more collisions of that reactant in a specific time period.
What is the relationship between temperature and rate constant?
Increasing the temperature of a reaction generally speeds up the process (increases the rate) because the rate constant increases according to the Arrhenius Equation. As T increases, the value of the exponential part of the equation becomes less negative thus increasing the value of k.
What is the relationship between Q and K?
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. If Q = K then the system is already at equilibrium.
Does equilibrium constant change with temperature?
Increasing the temperature decreases the value of the equilibrium constant. Where the forward reaction is endothermic, increasing the temperature increases the value of the equilibrium constant. … The position of equilibrium also changes if you change the temperature.
What is rate constant k?
The specific rate constant (k) is the proportionality constant relating the rate of the reaction to the concentrations of reactants. The rate law and the specific rate constant for any chemical reaction must be determined experimentally. The value of the rate constant is temperature dependent.
Does rate constant depend on pressure?
The majority of the rate constants were determined at a pressure of approximately 95 Torr. … Given the close agreement between Howard’s low pressure results and our higher pressure values, we conclude that the rate constant does not have a significant pressure dependence for temperatures between 200 and 300 K.
Is rate constant dependent on concentration?
The rate constant (k) of a rate law is a constant of proportionality between the reaction rate and the reactant concentration. The exponent to which a concentration is raised in a rate law indicates the reaction order, the degree to which the reaction rate depends on the concentration of a particular reactant.