Q. What is the relationship between the rate of reaction and temperature according to the Arrhenius equation? (2022)
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A.
Inversely proportional
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B.
Directly proportional
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C.
Exponential
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D.
Linear
Solution
According to the Arrhenius equation, the rate of reaction increases exponentially with temperature.
Correct Answer:
C
— Exponential
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Q. What is the unit of the rate constant for a first-order reaction? (2023)
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A.
M/s
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B.
M²/s
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C.
s⁻¹
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D.
M⁻¹s⁻¹
Solution
The unit of the rate constant for a first-order reaction is s⁻¹.
Correct Answer:
C
— s⁻¹
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Q. Which of the following factors does NOT affect the rate of a chemical reaction? (2021) 2021
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A.
Concentration of reactants
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B.
Temperature
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C.
Presence of a catalyst
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D.
Color of the reactants
Solution
The color of the reactants does not affect the rate of a chemical reaction. The other factors directly influence the reaction rate.
Correct Answer:
D
— Color of the reactants
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