Home
Class 12
CHEMISTRY
From the rate expression for the followi...

From the rate expression for the following reactions determines the order of reaction and the dimensions of the rate constant.
a) `3NO(g) to N_(2)O(g) + NO_(2)(g)` , Rate `=k[NO]^(2)`
b) `H_(2)O_(2)(aq) + 3I^(-)(aq) + 2H^(+)(aq) to 2H_(2)O(l) + I_(3)^(-)`, Rate =`[H_(2)O_(2)][I^(-)]`
c) `CH_(3)CHO(g) to CH_(4)(g) + CO(g)` : Rate = `k[CH_(3)CHO]^(3//2)`
d) `CHCl_(3)(g) to Cl_(4)(g) + HCl(g)` : Rate = `k[CHCl_(3)][Cl_(2)]^(1//2)`
e) `C_(2)H_(5)Cl(g) to C_(2)H_(4)(g) + HCl(g)`, Rate =`k[C_(2)H_(5)Cl]`

Text Solution

Verified by Experts

a) Order of reaction = 2
Dimension of rate constant (k) = `[molL^(-1)]^(1-n)s^(-1)=[molL^(-1)]^(1-2)s^(-1)= mol^(-1)Ls^(-1)`
b) Order or reaction `= 1+1=2`
Dimension of rate consant (k) = same as in (a)
c) Order of reaction = `3//2`
Dimension of rate constant (k) = `[molL^(-1)]^(1-n)s^(-1)= [mol L^(-1)]^(1-3//2)s^(-1) = mol^(-1//2)L^(1//2)s^(-1)`
d) Order of reaction `= 1+1//2 = 3//2`
Dimension of rate constant(k) = Same as in (c)
e) Order of reaction = 1
Dimension of rate constant (k) =`[molL^(-1)]^(1-n)s^(-1) = [molL^(-1)](1-1)s^(-1)=s^(-1)`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    DINESH PUBLICATION|Exercise NCERT in text questions|38 Videos

  • CHEMICAL KINETICS

    DINESH PUBLICATION|Exercise Short Answer type questions|20 Videos

  • CHEMICAL KINETICS

    DINESH PUBLICATION|Exercise Additional Numerical Problems For Practice|16 Videos

  • CHEMICAL BONDING AND MOLECULAR STRUCTURE

    DINESH PUBLICATION|Exercise Unit Test - 1|20 Videos

  • CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS

    DINESH PUBLICATION|Exercise Exercise|507 Videos

Similar Questions

Explore conceptually related problems

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(g), Rate =k[NO]^(2) b. H_(2)O_(2)(aq)+3I^(c-)(aq)+2H^(o+) rarr 2H_(2)O(l)+I_(3)^(c-), Rate =k[H_(2)O_(2)][I^(c-)] c. CH_(3)CHO(g)rarr CH_(4)(g)+CO(g), Rate =k[CH_(3)CHO]^(3//2) d. C_(2)H_(5)Cl(g) rarr C_(2)H_(4)(g)+HCl(g), Rate k[C_(2)H_(5)Cl]

From the expression of the following reactions, determine order of reaction and the dimensions of the rate constant. (i) 3NO(g)rarrN_2O(g)+NO_2(g) " Rate"=k[NO]^2 (ii) H_2O_2(aq)+3l^(-)(aq)+2H^+rarr2H_2O(l)+l_3^(-)" Rate"= k[H_2O_2][l] (iii) CH_3CHO(g) rarrCH_4(g)+CO(g)+CO(g)" Rate" =k[CH_3CHO]^(3//2) (iv) C_2H_5Cl(g)rarrC_2H_4(g)+HCl(g)" Rate"=k[C_2H_5Cl]

O_(3)(g)+I^(-)(aq)+H_(2)O(l) to

Determine which of the following reactions at constant pressure represent surrounding that do work on the system environment : (P) 4NH_(3)(g) + 7O_(2)(g) to 4 NO_(2)+ 6H_(2)O(g) (Q) CO.O(g)+ 2H_(2)(g) to CH_(3)OH(l) (R) C("s,graphite")+H_(2)O(g) to CO(g)+H_(2)(g) (S) H_(2)O(s) to H_(2)O(l)

Define the order of chemical reaction . Find the overall order of the following reactions : (a) CHCl_(3(g)) +Cl_(2(g))rarr C Cl_(4(g))+HCl_((g)),"Rate"= k[CHCl_(3)][Cl_(2)] (b) 2NO_((g))+O_(2(g)) rarr 2NO_(2(g)),"Rate" = k[NO]^(2)[O_(2)]

Knowledge Check

  • Which of the following rate expression does not represent the rate of the reaction ? 2N_(2)O_(5(g)) to 4NO_(2(g)) + O_(2(g))

    A
    `-(1)/(2) (d[N_(2)O_(5)])/(dt)`
    B
    `(1)/(2) (d[N_(2)O_(5)])/(dt)`
    C
    `([O_2])/(dt)`
    D
    `(1)/(4) (d[NO_(2)])/(dt)`

  • Determine which of the following reactions at constant pressure represent surrounding that do work on the system environment : (P) 4NH_(3)(g) + 7O_(2)(g) to 4 NO_(2)+ 6H_(2)O(g) (Q) CO.O(g)+ 2H_(2)(g) to CH_(3)OH(l) (R) C("s,graphite")+H_(2)O(g) to CO(g)+H_(2)(g) (S) H_(2)O(s) to H_(2)O(l)

    A
    R,S
    B
    Q and R
    C
    Q,S
    D
    P,Q and S

  • For the following three reaction a, b and c, equilibrium constants are given : (i) CO(g) * H_(2)O_(g) hArr CO_(2)(g) * H_(2)(g), K_(1) (ii) CH_(4)(g) * H_(2)O(g) hArr CO(g) * 3H_(2)(g), K_(2) (iii) CH_(4)(g)+2H_(2)O(g) hArr CO_(2)(g)+4H_(2)(g), K_(3)

    A
    `K_(1)sqrt(K_(2))=K_(3)`
    B
    `K_(2)K_(3)=K_(1)`
    C
    `K_(3)=K_(1)K_(2)`
    D
    `K_(3).K_(2)^(3)=K_(1)^(2)`