मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

In a pseudo first order hydrolysis of ester in water, the following results were obtained: t/s 0 30 60 90 [A]/mol L−1 0.55 0.31 0.17 0.085 Calculate the average rate of reaction between the time - Chemistry

Advertisements
Advertisements

प्रश्न

In a pseudo first order hydrolysis of ester in water, the following results were obtained:

t/s 0 30 60 90
[A]/mol L−1 0.55 0.31 0.17 0.085

Calculate the average rate of reaction between the time interval 30 to 60 seconds.

संख्यात्मक
Advertisements

उत्तर

Average rate of reaction between the time interval, 30 to 60 seconds =

`(C_2 - C_1)/(t_2 - t_1)`

= `(0.17 - 0.31)/(60 - 30)`

= `(0.14)/30`

= -4.67 × 10−3 mol L−1 s−1

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Chemical Kinetics - Exercises [पृष्ठ ८५]

APPEARS IN

एनसीईआरटी Chemistry Part 1 and 2 [English] Class 12
पाठ 3 Chemical Kinetics
Exercises | Q 3.8 | पृष्ठ ८५

संबंधित प्रश्‍न

Time required to decompose SO2Cl2 to half of its initial amount is 60 minutes. If the decomposition is a first order reaction, calculate the rate constant of the reaction.


The rate constant for a first order reaction is 60 s−1. How much time will it take to reduce the initial concentration of the reactant to its `1/16`th value?


For the decomposition of azoisopropane to hexane and nitrogen at 543 K, the following data are obtained.

t (sec) P(mm of Hg)
0 35.0
360 54.0
720 63.0

Calculate the rate constant.


Following data are obtained for reaction :

N2O5 → 2NO2 + 1/2O2

t/s 0 300 600
[N2O5]/mol L–1 1.6 × 10-2 0.8 × 10–2 0.4 × 10–2

1) Show that it follows first order reaction.

2) Calculate the half-life.

(Given log 2 = 0.3010, log 4 = 0.6021)


 A first order reaction is 50% complete in 25 minutes. Calculate the time for 80% completion of the reaction.


Which of the following graphs is correct for a first order reaction?


With the help of an example explain what is meant by pseudo first order reaction.


In the presence of acid, the initial concentration of cane sugar was reduced from 0.2 M to 0.1 Min 5 hours and to 0.05 Min 10 hours. The reaction must be of?


The rate constant of a first order reaction is 6.9 × 10–3s–1. How much time will it take to reduce the initial concentration to its 1/8th value?


Gaseous cyclobutene isomerizes to butadiene in a first order process which has a 'k' value of 3.3 × 10−4 s−1 at 153°C. The time in minutes it takes for the isomerization to proceed 40% to completion at this temperature is ______. (Rounded-off to the nearest integer)


The slope in the plot of ln[R] vs. time for a first order reaction is ______.


The slope in the plot of `log  ["R"]_0/(["R"])` Vs. time for a first-order reaction is ______.


Radioactive decay follows first-order kinetics. The initial amount of two radioactive elements X and Y is 1 gm each. What will be the ratio of X and Y after two days if their half-lives are 12 hours and 16 hours respectively?


What is the rate constant?


The following data were obtained during the decomposition of SO2Cl2 at the constant volume. SO2Cl2 →SO2(g) + Cl2(g)

Time (s) Total Pressure (bar)
0 0.5
100 0.6

Calculate the rate constant of the reaction.


Write the equation for integrated rate law for a first order reaction.


Write the unit of rate constant [k] for the first order reaction.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×