0
The second order rate law
-dA/dt = k [A] [B]
for example if B is present in excess amount, the reaction rate reduces to pseudo first order,
A0=0.01 M
B0: 2 M
AT= 0.0 M
BT=1.99 M
so the reaction rate depends on the concentration of A and
the new reaction rate is pseudo first order;
-dA/dt = kı [A]
The third order rate law
-dA/dt = k [A2] [B]
If B is in excess amount, molarity of B0 is a very closer value to Bt ( for example ; B0= 2 M BT=1.99 M)
the reaction becomes to be pseudo second order.
-dA/dt = k [A2]
Behzat BALCI
enviromental enginneering of cukurova university
What else can I help you with?
How can one determine the rate constant for a second-order reaction?
To determine the rate constant for a second-order reaction, one can use the integrated rate law for a second-order reaction, which is: 1/At kt 1/A0. By plotting 1/At against time and finding the slope, which is equal to the rate constant k, one can determine the rate constant for the second-order reaction.
How can one determine the order of reaction from a graph?
To determine the order of reaction from a graph, you can look at the slope of the graph. If the graph is linear and the slope is 1, the reaction is first order. If the slope is 2, the reaction is second order. If the slope is 0, the reaction is zero order.
What is the order of the reaction with respect to the concentration of a?
The order of the reaction with respect to the concentration of A refers to how the rate of the reaction changes with changes in the concentration of A. It can be zero order, first order, second order, etc., depending on how the rate is affected by the concentration of A.
How can one determine the reaction order from a table of experimental data?
To determine the reaction order from a table of experimental data, you can plot the concentration of the reactant versus time for each experiment. The reaction order is determined by the slope of the line on the graph. If the slope is constant, the reaction is first order. If the slope doubles, the reaction is second order. If the slope triples, the reaction is third order.
How can one determine the order of a reaction from a table?
To determine the order of a reaction from a table, you can look at how the rate of the reaction changes with the concentration of reactants. If doubling the concentration of a reactant doubles the rate, the reaction is first order with respect to that reactant. If doubling the concentration quadruples the rate, the reaction is second order. And if doubling the concentration increases the rate by a factor of eight, the reaction is third order.
Calculation for pseudo first order reaction?
To determine the rate constant k for a pseudo-first order reaction, you can plot the natural logarithm of the concentration of reactant vs. time. The slope of the resulting line will be equal to -k. This approach is often used for reactions where one reactant is present in excess and its concentration remains constant throughout the reaction.
Define Pseudo unimolecular reaction with example?
there is no meaning in pseudo unimolecular reaction. Explanation: molecularity of a reaction is "the no. of species(ions, molecules or atoms) which collide simultaneously to give rise a chemical change or chemical reaction. a reaction can be called unimolecular (decomposition of ammonium nitrite to nitrogen and water) as single molecule decomposes to give rise to products a reaction can be called bimolecular (HI decomposes to H2 and I2) as two HI molecules are colliding. that means molecularity says about "actually how many species collide and there is nothing ambiguity (pseudo) in it. but a reaction can be called pseudo first order reaction (hydrolysis of sucrose) as rate of reaction depends on only sucrose conc. and water solvent conc. as is in excess do not affect the rate. if any one is having doubts in chemistry u can mail me at chemistry_krish@yahoomail.com
Why adsorption follows pseudo orders?
is because is not chemical reaction
How can one determine the rate constant for a second-order reaction?
To determine the rate constant for a second-order reaction, one can use the integrated rate law for a second-order reaction, which is: 1/At kt 1/A0. By plotting 1/At against time and finding the slope, which is equal to the rate constant k, one can determine the rate constant for the second-order reaction.
How can one determine the order of reaction from a graph?
To determine the order of reaction from a graph, you can look at the slope of the graph. If the graph is linear and the slope is 1, the reaction is first order. If the slope is 2, the reaction is second order. If the slope is 0, the reaction is zero order.
What is the order of the reaction with respect to the concentration of a?
The order of the reaction with respect to the concentration of A refers to how the rate of the reaction changes with changes in the concentration of A. It can be zero order, first order, second order, etc., depending on how the rate is affected by the concentration of A.
How do you identify whether the order of the reaction is zero order first order or second order?
Linear system of arbitrary complexty can be viewed as being composed of first and second order
How can one determine the reaction order from a table of experimental data?
To determine the reaction order from a table of experimental data, you can plot the concentration of the reactant versus time for each experiment. The reaction order is determined by the slope of the line on the graph. If the slope is constant, the reaction is first order. If the slope doubles, the reaction is second order. If the slope triples, the reaction is third order.
How is rate of a chemical reaction usually expressed?
Rates of reaction can be expressed depending upon their order.For example say you have a reaction between two chemicals and the initial rate for that reaction is known :-when:-The concentration of one of the reactants is doubled and the other reactants concentration remains the same and the overall rate of reaction does not change - reaction is zero orderwith respect to chemical which was doubled.The concentration of one of the reactants is doubled and other reactants concentration remains the same and the overall rate of reaction doubles - reaction is first order with respect to chemical which was doubled.The concentration of one of the reactants is doubled and other reactants concentration remains the same and the overall rate of reaction quadruples - reaction is second order with respect to chemical which was doubled.Zero Orderrate = kFirst Orderrate = k [A] (reaction is 1st order with respect to [A] and 1st order overall)Second Orderrate = k [A][B] (reaction is first order with respect to [A] and first order with respect to[B], reaction is second order overall)rate = k [A]2 (reaction is second order with respect to [A] and second order overall)Orders are simply added together in order to determine the overall order of reaction :-rate = k [A][B][C] would be third order overall and first order with respect to each of the reactantsThere are other orders of reaction, for example 2 and 3 quarter orders and third order reactions, but these are a little more complex.
What is pseudo unimolecular reaction?
A pseudo unimolecular reaction refers to a reaction mechanism where overall kinetics mimic those of a unimolecular reaction, but involve multiple molecules coming together in a step-wise process. This can occur when a stable intermediate is formed that dictates the rate of the reaction, making it appear unimolecular even though it involves multiple reactant molecules.
How can one determine the order of a reaction from a table?
To determine the order of a reaction from a table, you can look at how the rate of the reaction changes with the concentration of reactants. If doubling the concentration of a reactant doubles the rate, the reaction is first order with respect to that reactant. If doubling the concentration quadruples the rate, the reaction is second order. And if doubling the concentration increases the rate by a factor of eight, the reaction is third order.
How can one determine the order of reaction by utilizing concentration and time data?
To determine the order of reaction using concentration and time data, one can plot the natural logarithm of the concentration of the reactant against time. The slope of the resulting graph will indicate the order of the reaction. If the slope is constant, the reaction is first order; if the slope doubles, the reaction is second order; and if the slope triples, the reaction is third order.
