What happens when Q K?
What happens when Q 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.
What does K mean in equilibrium?
Summary. The magnitude of the equilibrium constant, K, indicates the extent to which a reaction will proceed: If K is a large number, it means that the equilibrium concentration of the products is large.
What is the value of rate constant k?
k is the first-order rate constant, which has units of 1/s. The method of determining the order of a reaction is known as the method of initial rates. The overall order of a reaction is the sum of all the exponents of the concentration terms in the rate equation.
What is the rate constant k dependent on?
The rate constant, k, relates the concentrations and orders of the reactants to the reaction rate. It is dependent on the reaction as the temperature at which the reaction is performed.
What does second-order reaction mean?
: a chemical reaction in which the rate of reaction is proportional to the concentration of each of two reacting molecules — compare order of a reaction.
What does 2nd order mean?
The order of a chemical reaction is the sum of the values x and y. A second order reaction is a reaction where x + y = 2. This can happen if one reactant is consumed at a rate proportional to the square of the reactant’s concentration (rate = k[A]2) or both reactants are consumed linearly over time (rate = k[A][B]).
What does Second Order mean in math?
Second-order arithmetic, an axiomatization allowing quantification of sets of numbers. Second-order differential equation, a differential equation in which the highest derivative is the second.
What does second order kinetics mean?
second-order kinetics. A term describing the reaction rate of a chemical reaction in which the rate is proportional to the product of the concentrations (in moles) of two of the reactants (also called bimolecular kinetics), or to the square of the molar concentration of the reactant if there is only one.
Is first order faster than second order?
A reaction being first order does not necessarily indicate that it is faster than a second order reaction, just that changing the concentrations of a reactant in the first order reaction has a less “drastic” effect on the rate than if you made that same concentration change to a second order reaction.
What is the unit for second order reaction?
The units of k for a zero-order reaction are M/s, the units of k for a first-order reaction are 1/s, and the units of k for a second-order reaction are 1/(M·s).