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How is the molecularity of the rate-controlling step related to the overall reaction order?
The molecularity of the rate-controlling step may not necessarily be the same as the overall reaction order. The rate-controlling step is determined by the slowest step in a reaction mechanism, while the overall reaction order is the sum of the individual reactant concentrations in the rate law equation. It is possible for the molecularity of the rate-controlling step to influence the overall reaction order, but they are not always directly correlated.
The decomposition reaction of ammonia gas on platinum surface has a rate constant k equals 2.510-4 mol l-1s-1 what is the order of the reaction?
The rate constant is not indicative of the order of the reaction. To determine the order of the reaction, experimental data (such as concentration vs. rate data) is needed. The order of the reaction can be found by examining how changes in reactant concentrations affect the rate of the reaction.
What are the units for the rate constant (kc) in a chemical reaction?
The units for the rate constant (k) in a chemical reaction depend on the overall order of the reaction. For a first-order reaction, the units are 1/time (usually s-1). For a second-order reaction, the units are 1/(concentration time) (usually M-1 s-1).
What are the units of measurement for the rate constant in a chemical reaction?
The units of measurement for the rate constant in a chemical reaction depend on the overall order of the reaction. For a first-order reaction, the units are 1/time (usually s-1). For a second-order reaction, the units are 1/(concentration x time) (usually M-1 s-1).
How do coefficients affect the rate law of a chemical reaction?
Coefficients in a chemical reaction affect the rate law by determining the order of the reaction with respect to each reactant. The coefficients indicate how many molecules of each reactant are involved in the reaction, which helps determine the overall rate of the reaction.
How is the molecularity of the rate-controlling step related to the overall reaction order?
The molecularity of the rate-controlling step may not necessarily be the same as the overall reaction order. The rate-controlling step is determined by the slowest step in a reaction mechanism, while the overall reaction order is the sum of the individual reactant concentrations in the rate law equation. It is possible for the molecularity of the rate-controlling step to influence the overall reaction order, but they are not always directly correlated.
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.
The decomposition reaction of ammonia gas on platinum surface has a rate constant k equals 2.510-4 mol l-1s-1 what is the order of the reaction?
The rate constant is not indicative of the order of the reaction. To determine the order of the reaction, experimental data (such as concentration vs. rate data) is needed. The order of the reaction can be found by examining how changes in reactant concentrations affect the rate of the reaction.
What is The order of reaction for which unit of rate and rate constant is same?
In a zero order overall process, the rate and rate constant will be the same. (Reaction order is an exponent, and if that exponent is "0" then the value is "1" and will cancel out.)
What are the units for the rate constant (kc) in a chemical reaction?
The units for the rate constant (k) in a chemical reaction depend on the overall order of the reaction. For a first-order reaction, the units are 1/time (usually s-1). For a second-order reaction, the units are 1/(concentration time) (usually M-1 s-1).
What are the units of measurement for the rate constant in a chemical reaction?
The units of measurement for the rate constant in a chemical reaction depend on the overall order of the reaction. For a first-order reaction, the units are 1/time (usually s-1). For a second-order reaction, the units are 1/(concentration x time) (usually M-1 s-1).
If the order of a chemical reaction with respect to one of its reactants is zero how does that reactant's concentration affect the rate of the chemical reaction?
If the order of a reactant is zero, its concentration will not affect the rate of the reaction. This means that changes in the concentration of the reactant will not change the rate at which the reaction proceeds. The rate of the reaction will only be influenced by the factors affecting the overall rate law of the reaction.
How do coefficients affect the rate law of a chemical reaction?
Coefficients in a chemical reaction affect the rate law by determining the order of the reaction with respect to each reactant. The coefficients indicate how many molecules of each reactant are involved in the reaction, which helps determine the overall rate of the reaction.
What is the significance of the zero order rate law in chemical kinetics and how does it impact the rate of a reaction?
The zero order rate law in chemical kinetics is significant because it shows that the rate of a reaction is independent of the concentration of reactants. This means that the rate of the reaction remains constant regardless of how much reactant is present. This can be useful in determining the overall reaction rate and understanding the reaction mechanism.
What is the overall order for rate equals kABC?
If you mean the overall rate order for the rate: K[A][B][C] that would be three because [A], [B] and [C] all have a rate order of one and when you add them together (1+1+1) you obtain three!
What is the value and unit of the rate constant for this reaction?
The value and unit of the rate constant for a reaction represent how fast the reaction occurs. The rate constant is typically denoted by the symbol "k" and its unit depends on the overall order of the reaction. The unit of the rate constant can be determined by the reaction rate equation.
What is a 1.5 order of reaction?
A + B --> C has non-elementary reaction rate equation -rA = kCACB1/2 The exponent of CA is 1, the exponent of CB is 1/2, for an overall reaction order of 1 + (1/2) = 1.5. Do not let the stoichiometric coefficients from the reaction mislead you. It has to do with the rate equation for a given reaction, not the (net) chemical reaction itself.
