The slope of Arrhenius Plot (ln k v/s \(\frac{1}{T}\)) of first order reaction is −5×103 K. The value of Ea of the reaction is. Choose the correct option for your answer. [Given R=8.314 JK−1mol−1 ]
The slope of Arrhenius Plot (ln k v/s \(\frac{1}{T}\)) of first order reaction is −5×103 K. The value of Ea of the reaction is. Choose the correct option for your answer. [Given R=8.314 JK−1mol−1 ]
−83 kJ mol−1
41.5 kJ mol−1
83.0 kJ mol−1
166 kJ mol−1
The Correct Option is B
Solution and Explanation
The correct answer is option (B) : 41.5 kJ mol−1
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Concepts Used:
Rate of a Chemical Reaction
The rate of a chemical reaction is defined as the change in concentration of any one of the reactants or products per unit time.
Consider the reaction A → B,
Rate of the reaction is given by,
Rate = −d[A]/ dt=+d[B]/ dt
Where, [A] → concentration of reactant A
[B] → concentration of product B
(-) A negative sign indicates a decrease in the concentration of A with time.
(+) A positive sign indicates an increase in the concentration of B with time.
Factors Determining the Rate of a Reaction:
There are certain factors that determine the rate of a reaction:
- Temperature
- Catalyst
- Reactant Concentration
- Chemical nature of Reactant
- Reactant Subdivision rate