Ask a Question

The rate of a reaction quadruples when the temperature changes from `293K` to `313K`. Calculate the energy of activation of the reaction assuming that

in Education by
The rate of a reaction quadruples when the temperature changes from 293K to 313K . Calculate the energy of activation of the reaction assuming that it does not change with temperature. Select the correct answer from above options

1 Answer

0 votes
by
Correct Answer - Ea=52.8mol-1 Let k at 293K=k1,kat313K=k2 ∴k2=4k1or k2 k1 =4 Using Arrhenius equation, log k2 k1 = Ea 2.303R ( T2-T1 T1T2 ) log4= Ea 2.303×8.314JK-1mol-1 × (313-293) 313×293 0.606= Ea 2.303×8.314 × 10 313×293 Solvie for Ea: ∴Ea=52860Jmol-1=52.86mol-1

Related questions

0 votes
Q: The rate of the chemical reaction doubles for an increase of `10K` in absolute temperature from `300K`. Calculate `E_(a)`.
    The rate of the chemical reaction doubles for an increase of 10K in absolute temperature from 300K . Calculate Ea . Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance
0 votes
Q: The activation energy for the reaction `:` ltbr. `2Hl(g) rarr H_(2)(g)+I_(2)(g)` is `209.5 kJ mol^(-1)` at `581K`. Calculate the fraction of molecules
    The activation energy for the reaction : ltbr. 2Hl(g)→H2(g)+I2(g) is 209.5kJmol-1 at 581K . ... greater than activation energy ? Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance
0 votes
Q: The concentration of a reactant changes form `0.03 M` to `0.02 M` in `25 min`. Calculate the average rate of reaction uisng of time both in minutes an
    The concentration of a reactant changes form 0.03M to 0.02M in 25min. Calculate the average rate of reaction ... minutes and seconds. Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance
0 votes
Q: Calculate the half life of a first order reaction from their rate constants given below `:` `a. 200s^(-1)`,`b. 2 mi n^(-1)`,`c.4years^(-1)`
    Calculate the half life of a first order reaction from their rate constants given below : a.200s-1 ,b.2min-1 ,c.4years-1 Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance
0 votes
Q: Can a reaction have negative or zero activation energy ?
    Can a reaction have negative or zero activation energy ? Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance
0 votes
Q: The rate constant for the decomposition of hydrocarbons is `2.418xx10^(-5)s^(-1)` at `546K`. If the energy of activation is `179.9kJ mol^(-1)`, what w
    The rate constant for the decomposition of hydrocarbons is 2.418 10-5s-1 at 546K . If the energy of ... pre- exponential factor? Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance
0 votes
Q: For the reaction `:` `2A+B rarr A_(2)B` the rate `=k[A][B]^(2)` with `k=2.0xx10^(-6)mol^(-2)L^(2)s^(-1)`. Calculate the initial rate of the reaction w
    For the reaction : 2A+B→A2B the rate =k[A][B]2 with k=2.0 10-6mol-2L2s-1 . Calculate the initial rate of ... is reduced to 0.06molL-1 . Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance
0 votes
Q: A reaction is first order in `A` secod order in `B`: (i) write differential rate equation. (ii) How is the rate affected when the concentration of `B`
    A reaction is first order in A secod order in B : (i) write differential rate equation. (ii) How is the rate ... A and B is doubled? Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance
0 votes
Q: When is the rate of reaction equal to specific rate constants ?
    When is the rate of reaction equal to specific rate constants ? Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance
0 votes
Q: From the rater expression for the following reactions, determine their order of reaction and dimensions of the rate constants. `a. 3NO(g) rarr N_(2)O(
    From the rater expression for the following reactions, determine their order of reaction and dimensions of the rate ... k[C2H5Cl] Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance
0 votes
Q: Mention the factors that affect the rate of a chemical reaction.
    Mention the factors that affect the rate of a chemical reaction. Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance
0 votes
Q: What will be effect of temperature on rate constant ?
    What will be effect of temperature on rate constant ? Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance
0 votes
Q: What is the effect of temperature on the rate constant of a reactiion ? How can this temperature effect on rate constant be represented quantitatively
    What is the effect of temperature on the rate constant of a reactiion ? How can this temperature effect ... quantitatively ? Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance
0 votes
Q: What is the effect of temperature and pressure on the rate of radioactive disintegration ?
    What is the effect of temperature and pressure on the rate of radioactive disintegration ? Select the correct answer from above options...
asked Jan 2, 2022 in Education by JackTerrance
0 votes
Q: In some cases, it is found that a large number of colliding molecules have energy more than thereshold value, yet the reaction is slow. Why?
    In some cases, it is found that a large number of colliding molecules have energy more than thereshold value, yet the ... is slow. Why? Select the correct answer from above options...
asked Jan 4, 2022 in Education by JackTerrance

© Copyright 2018-2023 www.Blogmepost.com. All rights reserved. Developed by Blogmepost.

...