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


7.
Rate of a reaction usually depends on:
A.
Concentration of reactants, temperature, catalyst (if any), and nature of reactants
B.
Colour of indicator
C.
Mass of vessel
D.
Volume of solvent only
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ANSWER :
A. Concentration of reactants, temperature, catalyst (if any), and nature of reactants
8.
Activation energy (Ea) is:
A.
Difference between potential energies of reactants
B.
Energy released during reaction
C.
Heat absorbed at equilibrium
D.
Minimum energy required for reactants to form products via the activated complex
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ANSWER :
D. Minimum energy required for reactants to form products via the activated complex
9.
Activated complex (transition state) in a reaction is:
A.
Stable intermediate
B.
Final product
C.
A high-energy unstable intermediate species at the energy maximum
D.
Pure reactant
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ANSWER :
C. A high-energy unstable intermediate species at the energy maximum
10.
Collision theory states that for a reaction to occur:
A.
Molecules must form ions
B.
Molecules must collide with sufficient energy and proper orientation
C.
Molecules must dissolve in water
D.
Molecules must be coloured
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ANSWER :
B. Molecules must collide with sufficient energy and proper orientation
11.
In the energy profile diagram, the difference between energy of reactants and the activated complex represents:
A.
Activation energy of forward reaction
B.
Activation energy of reverse reaction
C.
Enthalpy of reaction (ΔH)
D.
Bond dissociation energy
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ANSWER :
A. Activation energy of forward reaction
12.
Rate constant (k) of a reaction depends on:
A.
Initial concentrations of reactants
B.
Temperature and presence of catalyst (independent of concentration)
C.
Volume of solvent only
D.
Mass of vessel
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ANSWER :
B. Temperature and presence of catalyst (independent of concentration)