Which of the following statements for the order of a reaction is incorrect?

Monjur Alahi

Which of the following statements for the order of a reaction is incorrect?
A. order can be determined only experimentaly
B. Order is not influenced by stoichiometric coefficient of the reactants.
C. Order of a reaction is sum of power to the concentration termsof reaction to express rate of reactions.
D. Order of reaction is always a whole numbers.


0 like 0 dislike
1 views
Share with your friends

1 Answers

Salim Ahmed Kawsar

Call

Correct Answer - D
d) Order of reaction can be fraction in complex reactions.

0 like 0 dislike
1 views
Talk Doctor Online in Bissoy App
A first order reaction takes 100 min for completion of 60 % of reaction ,The time eequired for completion of 90% of the reaction is

Correct Answer - D For the order reaction ,`k=(2.303)/(t)log""(C_(0))/(C_(t))` Case I: `C_(0)=100 M,C_(t) =100 -60 =40, t= 100 min` `k=(2.303)/(100)xxlog""(100)/(40)` `k=(2.303xx0.3979)/(100)` case-II : `C_(0)=100 M,C_(t)=100-90=10M ` `t=(2.303)/(k) log""(100)/(10)` `=(2.303)/(k)` .... substituting...

2 Answers 2 views
Which of the following statements is incorrect regarding reaction quotient (Q) ?

Correct Answer - C `R hArr P` `R_f =K_f [R]`….(1) `R_b = K_b [P]`….(2) Equation (2) `divide` Equation (1) `R_b/R_f=K_b/K_fxx "[P]"/"[R]"` or `R_b/R_f=K_b/K_f Q` or `Q=R_b/R_f xx K_f /K_b`

2 Answers 1 views
a) Derive expression for the half period of first order reaction. b) Given an exmaple of zero order reaction.

b) `H_(2)(g) + Cl_(2)(g) overset(hv)to 2HCl(g)`

2 Answers 1 views
(i) Distinguish between order and molecularity of a reaction. (ii) when would order and molecularity of a reaction be the same?

for reactions taking place in single step.

2 Answers 1 views
Which of the following is incorrect about the order of reaction ?

Correct Answer - C c) The order of reaction can be fractional .

2 Answers 1 views
Assertion: Order of a reaction can be fractional. Reason: Order of a reaction cannot be written from the balanced chemical equation.

Correct Answer - C c) Correct reason: Complex reactions have normally fractional orders.

2 Answers 1 views
a) The reaction `A + B to C`, has zero order. Write its rate equation. b) A reaction `A to B` has been found to be of second order w.r.t A i) Write th

a) Rate `=k[A]^(@)[B]^(@)=k` b) i) Rate =`k[A]^(2)` ii) Units of k = L `mol^(-1)s^(-1)`.

2 Answers 1 views
Which of the following statements is incorrect about the collision theory of chemicacl reaction ?

Correct Answer - C According the postulates of collision theory there are following necessary conditions for any reaction to be occur. (i) Molecule should collide with suffiecent threshold energy. (ii) Their...

2 Answers 1 views
A reaction with respect to X is zero order till the concentration is reduced to half of initial concentration.Then this reaction become first order wi

Correct Answer - B `xto` product (zero order) Till the concentration of X changes from `X_0` to `X_0/2` , it is zero order with rate constant k. Time taken for concentration...

2 Answers 1 views
The reaction `Aoverset(k)rarr` Product, is zero order while the reaction `Boverset(k)rarr` Product, is first order reaction. For what intial concentra

Correct Answer - A For zero order reaction, x=kt `:. (a)/(2)=kxxt_(1//2),i.e.,t_(1//2)=(a)/(2k)" ".....(i)` For frist order reaction, `t_(1//2)=(log_(e)2)/(k)" ".....(ii)` From eqs. (i) and (ii), `(a)/(2k)=(log_(e)2)/(k)` `a=log_(e)4M`

2 Answers 1 views
X