Advertisements
Advertisements
Question
Write units of rate constants for:
- First-order reaction
- Zero-order reaction
Solution
Units of rate constants:
- First-order reaction: s–1, min–1 or hour–1
- Zero-order reaction: mol dm−3 s–1
APPEARS IN
RELATED QUESTIONS
Answer the following in one or two sentences.
Write the relationships between rate constant and half-life of the first order and zeroth-order reactions.
Answer the following in brief.
Obtain the relationship between the rate constant and half-life of a first-order reaction.
Answer the following in brief.
What is a zeroth-order reaction?
Solve
The half-life of a first-order reaction is 1.7 hours. How long will it take for 20% of the reactant to react?
Derive the integrated rate law for the zeroth order reaction.
Give one example of pseudo first-order reaction.
Write order of the following reaction:
\[\ce{2NH_{3(g)} -> N_{2(g)} + 3H_{2(g)}}\]
What is half life of first order reaction if time required to decrease concentration of reactants from 0.8 M to 0.2 M is 12 hours?
For the reaction 2NOBr → 2NO2 + Br2, the rate law is rate = k[NOBr]2. If the rate of a reaction is 6.5 × 10–6 mol L–1 s–1, when the concentration of NOBr is 2 × 10–3 mol L–1. What would be the rate constant of the reaction?
The rate constant of the first order reaction is 1.386 min–1. Calculate the time required for 80% reactant to decompose?
Define half life of a reaction.
A zero-order reaction \[\ce{X -> Product}\], with an initial concentration 0.02 M has a half-life of 10 min. if one starts with concentration 0.04 M, then the half-life is
If 75% of a first order reaction was completed in 60 minutes, 50% of the same reaction under the same conditions would be completed in ____________.
How long would it take to electroplate a spoon with 0.1 mol of silver (108 g/mol) at a constant current of 2.0 A using AgNO3?
Which among the following reaction is an example of a zero order reaction?
If [A] is the concentration of A at any time t and [A]0 is the concentration at t = 0, then for the 1st order reaction, the rate equation can be written as ____________.
The activation energy of a reaction is zero. Its rate constant at 280 K is 1.6 × 10-6 s-1, the rate constant at 300 K is ______.
In a first order reaction, the concentration of the reactant is reduced to 25% in one hour. The half-life period of the reaction is ____________.
The integrated rate equation for first-order reaction, A → product, is ______.
If time required to decrease concentration of reactant from 0.8 M to 0.2 M is 12 hours, the half life of this first order reaction is ____________.
For first order reaction the slope of the graph of log10 [A]t Vs. time is equal to ____________.
Which among the following is an example of zero order reaction?
A certain zero order reaction has rate constant 0.025 M s-1. What will be the concentration of reactant 'A' after 15 seconds, if initial concentration is 0.50 M?
The integrated rate equation is Rt = log C0 – log Ct, then the straight-line graph is obtained by plotting.
Obtain the expression for half-life and rate constant of the first-order reaction.
Half-life of a first order reaction is 30 minutes and initial concentration of reactant is 0.1 M.
What is half-life of the reaction if initial concentration of reactant is doubled?
Which is the relation between half life and rate constant for a zero order?
Which of the following correctly represents integrated rate law equation for a first order reaction in a gas phase?
The half-life period for the first order reaction is 1.7 hrs. How long will it take for 20% of the reactant to disappear?