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From the rate expression for the followi...

From the rate expression for the following reactions, determine their order of reaction and the dimensions of the rate constants:
(i) `3NO(g) to N_(2)O(g), "Rate"=k[NO]^(2)`
(ii) `H_(2)O_(2)(aq)+3I^(-)(aq)+2H^(+) to 2H_(2)O(l)+I_(3)^(-), "Rate"=k[H_(2)O_(2)][I^(-)]`
(iii) `CH_(3)CHO(g) to CH_(4)(g)+CO(g) , "Rate"=k[CH_(3)CHO]^(3//2)`
(iv) `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

(i) Order = 2, Dimensions of `k=("Rate")/([NO]^(2))=("mol L"^(-1)s^(-1))/(("mol L"^(-1))^(2))="L mol"^(-1)s^(-1)`
(ii) Order = 2, Dimensions of k = Same as in (i)
(iii) Order `=(3)/(2)`, Dimensions of `k=("Rate")/([CH_(3)CHO]^(3//2))=("mol L"^(-1)s^(-1))/(("mol L"^(-1))^(3//2))=L^(1//2)"mol"^(-1//2)s^(-1)`
(iv) Order = 1, Dimensions of `k=("Rate")/([C_(2)H_(5)Cl])=("mol L"^(-1)s^(-1))/("mol L"^(-1))=s^(-1)`.
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From the rate expressions for the following reactions, determine their order of reaction and the dimensions of the rate constants : (i) 3" NO "(g)toN_(2)O(g)+NO_(2)(g)," Rate "=k[NO]^(2) (ii) H_(2)O_(2)(aq)+3" I"^(-)(aq)+2" H"^(+)to2H_(2)O(l)+I_(3)^(-)," Rate "=k[H_(2)O_(2)][I^(-)] (iii) CH_(3)CHO(g)toCH_(4)(g)+" CO "(g)," Rate "=k[CH_(3)CHO]^(3//2) (iv) C_(2)H_(5)Cl(g)toC_(2)H_(4)(g)+HCl(g) ," Rate "=k[C_(2)H_(5)Cl].

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]

Knowledge Check

  • 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)`

  • Determine which of the following reactions at constant pressure represents surroundings that do work on the system: I. 4NH_(3)(g)+7O_(2)(g)rarr4NO_(2)(g)+6H_(2)O(g) II. CO(g)+2H_(2)(g)rarrCH_(3)OH(l) III. C(s,"graphite")+H_(2)O(g)rarrCO(g)+H_(2)(g) IV. H_(2)OrarrH_(2)O(l)

    A
    II,IV
    B
    II and III
    C
    II,IV
    D
    I and II,IV

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