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Standard IX
Chemistry
Temperature and Rate of Reaction
An increase i...
Question
An increase in the concentration of the reactants of a reaction leads to change in :
A
threshold energy
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B
collision frequency
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C
activation energy
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D
heat of reaction
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Solution
The correct option is
B
collision frequency
Collision frequency increases, as number of molecules per unit volume increases.
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Similar questions
Q.
The increase in concentration of the reactants lead to change in :
Q.
Explain why?
Rate of reaction is change in concentration in a given time interval. The change in concentration is (final concentration - initial concentration). As the reaction progresses the change in concentration of reactants decreases and that of products increases. D C gets a negative sign in case of reactants and
positive sign in case of products.
Q.
Assertion :The rate of reaction decreases with a decrease of concentration and increase with an increase of the concentration of reactants. Reason: The rate of reaction is directly proportional to the concentration of reactants.
Q.
What happens when a chemical reaction system is stressed by an 'increase in the concentration of the reactants?
Q.
The reaction A
+
B
→
products is first order in each of the reactants. How does the rate of reaction change if the concentration of A is increased by factor
3
?
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