Table of Contents
- 1 What is the rate law for a third order reaction?
- 2 How will the rate change if the concentration of A is tripled?
- 3 When the concentration of a reactant is tripled the reaction rate also triples?
- 4 How is rate affected when the concentration of B is tripled?
- 5 Which of the following is an example of first order reaction?
What is the rate law for a third order reaction?
Third-order reaction equation: dA/dt = -kA3….
| Reaction Order | Units of k |
|---|---|
| Second | L/mol/s |
| Third | mol-1 L2 s-1 |
How will the rate change if the concentration of A is tripled?
In a third order reaction with two reactants, if you triple the concentration of one of the reactants, the rate increases by a factor of 3.
What is the order of a reaction which has a rate expression?
The overall order of the reaction is the sum of the exponents of all the reactants in the rate expression.
Can the order of a reaction be 3?
To summarize, the order of reaction can be defined as the sum of the exponents of all the reactants present in that chemical reaction. If the order of that reaction is 3, then the reaction is said to be a third-order reaction.
When the concentration of a reactant is tripled the reaction rate also triples?
If a reactant is first order, then when its concentration is doubled, the rate of the reaction doubles; if the concentration is tripled, the rate triples, etc. (If a reactant is third order, then when its concentration is doubled, the rate of reaction increases by a factor of 8 (23 = 8), etc.)
How is rate affected when the concentration of B is tripled?
ii) How is rate affected when the concentration of B is tripled? iii) How is rate affected when the concentration of both A and B are doubled? The reactioon rate will increase to 9 times. The reaction rate will increase to 8 times.
Can order of reaction be more than 3?
(i) Proper orientation and effective collision of the reactants. (ii) the chances of simultaneous collision with proper orientation between more than 3 species are very rare, so reaction with order greater than 3 are rare. The rate of reaction will become one-fourth of the initial rate of reaction.
Why is order of reaction zero or fractional?
Order of reaction can be zero or fractional as order of reaction is directly related to sum of power of reactants.
Which of the following is an example of first order reaction?
First-order reactions are very common. We have already encountered two examples of first-order reactions: the hydrolysis of aspirin and the reaction of t-butyl bromide with water to give t-butanol. Another reaction that exhibits apparent first-order kinetics is the hydrolysis of the anticancer drug cisplatin.