the incorrect order indicated against the rate of reaction a + b gives c determine its rate and order
Answers
Answer:
Explanation:
The order of a rate law is the sum of the exponents of its concentration terms. Once the rate law of a reaction has been determined, that same law can be used to understand more fully the composition of the reaction mixture. More specifically, the reaction order is the exponent to which the concentration of that species is raised, and it indicates to what extent the concentration of a species affects the rate of a reaction, as well as which species has the greatest effect. For the N2O5 decomposition with a rate law of k[N2O5], this exponent is 1 (and thus is not explicitly shown); this reaction is therefore a first order reaction. It can also be said that the reaction is "first order in N2O5". For more complicated rate laws, the overall reaction order and the orders with respect to each component are used. As an example, consider the following reaction,
A+3B+2C→products(1)
whose experimental rate law is given by:
rate=k[A][B]2(2)
This reaction is third-order overall, first-order in A, second-order in B, and zero-order in C.
Zero-order means that the rate is independent of the concentration of a particular reactant. Of course, enough C must be present to allow the equilibrium mixture to form.
Relation to Rate Law
For the reaction:
aA+bB⟶P(3)
The rate law is as follows:
rate=k[A]x[B]y(4)
where
[A] is the concentration of species A,
x is the order with respect to species A.
[B] is the concentration of species B,
y is the order with respect to species B
k is the rate constant.
n is the reaction order for the whole chemical reaction. This can be found by adding the reaction orders with respect to the reactants. In this case, n = x + y.
Simple Rules
The order of a reaction is not necessarily an integer. The following orders are possible:
Zero: A zero order indicates that the concentration of that species does not affect the rate of a reaction
Negative integer: A negative order indicates that the concentration of that species INVERSELY affects the rate of a reaction
Positive integer: A positive order indicates that the concentration of that species DIRECTLY affects the rate of a reaction
Non-Integer: Non-integer orders, both positive and negative, represent more intricate relationships between concentrations and rate in more complex reactions.