Advertisements
Advertisements
Question
If the initial concentration of substance A is 1.5 M and after 120 seconds the concentration of substance A is 0.75 M, the rate constant for the reaction if it follows zero-order kinetics is ______.
Options
0.00625 molL-1s-1
0.00625 s-1
0.00578 molL-1s-1
0.00578 s-1
Solution
If the initial concentration of substance A is 1.5 M and after 120 seconds the concentration of substance A is 0.75 M, the rate constant for the reaction if it follows zero-order kinetics is 0.00625 molL-1s-1.
Explanation:
For Zero order reaction,
k = `(["R"]_0 - ["R"])/"t"`
k = `(1.5 - 0.75)/120`
k = 0.00625 molL-1s-1
APPEARS IN
RELATED QUESTIONS
The decomposition of NH3 on platinum surface is zero order reaction. What are the rates of production of N2 and H2 if k = 2.5 × 10−4 mol−1 L s−1?
The reaction between A and B is first order with respect to A and zero order with respect to B. Fill in the blanks in the following table:
| Experiment | A/mol L−1 | B/mol L−1 | Initial rate/mol L−1 min−1 |
| I | 0.1 | 0.1 | 2.0 × 10−2 |
| II | ______ | 0.2 | 4.0 × 10−2 |
| III | 0.4 | 0.4 | ______ |
| IV | ______ | 0.2 | 2.0 × 10−2 |
The decomposition of NH3 on a platinum surface is a zero-order reaction. If the rate constant (k) is 4 x 10-3 ms-1, how long will it take to reduce the initial concentration of NH3 from 0.1 M to 0.064 M?
Derive integrated rate law for a zero-order reaction \[\ce{A -> Product}\].
For which of the following reaction the units of rate constant and rate of the reaction are same?
Write the rate equation for the reaction `2A + B -> C` if the order of the reaction is zero.
Derive an expression to calculate time required for completion of zero order reaction.
The slope in the plot of [R] Vs. time for a zero-order reaction is ______.
Derive the expression for integrated rate law for zero order reaction A → Products.
If unit of rate constant is mol dm−3s−1, the order of reaction would be ______.
