Kinetic Study of the Reaction of Iodide Ions with Hydrogen Peroxide at Room Temperature NEET Questions

Organic Chemistry - Principles of Practical Chemistry

Kinetic Study of the Reaction of Iodide Ions with Hydrogen Peroxide at Room Temperature MCQ Questions


13.
Order of reaction is defined as:
A.
Number of reactants in the equation
B.
Sum of stoichiometric coefficients of reactants
C.
Number of moles of products formed
D.
Sum of the powers of concentration terms in the experimentally determined rate law
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ANSWER :
D. Sum of the powers of concentration terms in the experimentally determined rate law
14.
Molecularity of a reaction is:
A.
Number of moles of product
B.
Sum of orders w.r.t. each reactant
C.
Number of reacting species (atoms, molecules, ions) involved in an elementary step
D.
Equilibrium constant value
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ANSWER :
C. Number of reacting species (atoms, molecules, ions) involved in an elementary step
15.
Difference between order and molecularity is:
A.
Both are always whole numbers
B.
They are always equal
C.
Order is experimental and can be fractional; molecularity is theoretical and is a whole number
D.
Order is theoretical, molecularity is experimental
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ANSWER :
C. Order is experimental and can be fractional; molecularity is theoretical and is a whole number
16.
Rate law (rate equation) for a reaction A + B → products is:
A.
Rate = k[A]^a [B]^b, where a and b are experimentally determined
B.
Rate = [A] − [B]
C.
Rate = k[A][B] always
D.
Rate = k(a + b)
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ANSWER :
A. Rate = k[A]^a [B]^b, where a and b are experimentally determined
17.
Pseudo-first order reaction is one which:
A.
Has order infinity
B.
Is actually higher-order but appears first-order due to one reactant being in large excess
C.
Has order zero
D.
Has fractional order
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ANSWER :
B. Is actually higher-order but appears first-order due to one reactant being in large excess
18.
For a zero-order reaction, the rate is:
A.
Proportional to 1/[A]
B.
Proportional to [A]
C.
Proportional to [A]²
D.
Independent of concentration of reactants
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ANSWER :
D. Independent of concentration of reactants