Home
Class 12
CHEMISTRY
Aqueous AB(2) decomposes according to th...

Aqueous `AB_(2)` decomposes according to the first order reaction:
`AB_(2)(aq) rarr A(g) + 2B(l)`
After `20 min` the volume of `A(g) ` colledcted during such a reaction is `20 mL`, and that collected after a very long time is `40 mL`. The rate constant is :

Doubtnut Promotions Banner Mobile Dark

Text Solution

Verified by Experts

The correct Answer is:
B
`{:(,AB_(2)(aq) ,underset("first order")rarr,A(g),2B(l)),(t=0,a,,0,0),(t=20 min,(a-x),,x,2x),(t=oo min,0,,a,2a):}`
Note: At constant `T` and `P`, mole `prop` pressure.
`:. x prop 20`
`alpha prop 40`
`:. k = (2.3)/(t)log.((a)/(a-x))`
`= (2.3)/(20 min) log. (40)/((40-20))`
`= (2.3)/(20) xx log2 = (2.3 xx 0.3)/(20) = 3.45 xx 10^(-2) min^(-1)`
|

Topper's Solved these Questions

  • CHEMICAL KINETICS

    CENGAGE CHEMISTRY|Exercise Ex 4.3 More Than One Correct|5 Videos

  • CHEMICAL KINETICS

    CENGAGE CHEMISTRY|Exercise Ex4.4 Objective|10 Videos

  • CHEMICAL KINETICS

    CENGAGE CHEMISTRY|Exercise Ex 4.2 (Objective)|10 Videos

  • CARBOXYLIC ACIDS AND THEIR DERIVATIVES

    CENGAGE CHEMISTRY|Exercise Exercises Archives (Analytical And Descriptive)|34 Videos

  • COORDINATION COMPOUNDS

    CENGAGE CHEMISTRY|Exercise Archives Subjective|18 Videos

Similar Questions

Explore conceptually related problems

The compoistion of N_(2)O_(5) is a first order reaction represented by: N_(2)O_(5) rarr N_(2)O_(4) + 1//2O_(2) . After 20 min the volume of O_(2) profuced is 10 mL and at the end of the reaction 40 mL . The rate constant is equal to

In the reaction `NH_(4)NO_(2)(aq.) rarr N_(2)(g) + 2H_(2)O(l)` the volume of `N_(2)` after `20` min and after a long time is `40 ml` and `70 ml` respectively, The value of rate constant is :

`T_(50)` of first order reaction is 10 min. starting with 10 `"mol"^(-1)` rate after 20 min is :

In the reaction `NH_(4)NO_(2)(aq)rarrN_(2)(g)+2H_(2)O(l)` the volume of `N_(2)` after 20 min and after a long time is 40 ml and 70 ml respectively. The value of rate constant is :

For the first order reaction : H_(2)O_(2)(aq)rarrH_(2)O(l)+(1)/(2)O_(2)(g) . the half life of reaction is 30 min. If the volume of O_(@)(g) collected at a certain pressure and temperature is 100 ml after a long time from the start of reaction, then what was the volume of O_(2)(g) collected at the same pressure and temperature, after 60 min from the start of reaction?

Aqueous `AB_(2)` decomposes according to the first order reaction:
`AB_(2)(aq) rarr A(g) + 2B(l)`
After `20 min` the volume of `A(g) ` colledcted during such a reaction is `20 mL`, and that collected after a very long time is `40 mL`. The rate constant is :

For any `I^(st)` order gaseous reaction `A rarr 2B` Pressure devoloped after 20 min is 16.4 atm and after very long time is 20 atm. What is the total pressure devoloped after 10 min.

For the gaseous reaction A(g) rarr 4 B(g) + 3C( g) is found to be first order with respect to A. If at the starting the total pressure was 100mm Hg and after 20 minutes it is found to be 40 mm Hg. The rate constant of the reaction is :

For the reaction `AB_(2(g)) hArr AB_((g)) + B_((g))` if `alpha` is negligiable w.rt 1 then degree of dissociation `(alpha)` of `AB_(2)` is proportional to

Benzene diazonium chloride (A) decoposes into chlorobenzene (B) and `N_(2)` (g) in first order reaction. Volumes of `N_(2)` collected after 5 min and at the complete decomposition of A are 10 mL. and 50mL respectively. The are constant for the reaction is

For the first order reaction. N_2O_5(g) rightarrow N_2O_4(g) + 1/2 O_2 (g), the volume of O_2 produced is 15 mL and 40 mL after 8 minutes and at the end of the reaction respectively. The rate constant is equal to

Nitrogen pentoxide decomposes according to equation 2N_2O_5(g) rarr 4NO_2(g) + O_2(g) The first order reaction was allowed to proceed at 40^@C and the data below were collected . Calculate the initial rate of reaction.

The compoistion of `N_(2)O_(5)` is a first order reaction represented by: `N_(2)O_(5) rarr N_(2)O_(4) + 1//2O_(2)`.
After `20 min` the volume of `O_(2)` profuced is `10 mL` and at the end of the reaction `40 mL`. The rate constant is equal to

Home
Profile