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Chapter 7: Problem 20

The rate of a reaction usually (a) increases with increase in temperature (b) decreases with increase in temperature (c) remains unaffected with increase in temperature (d) none of these

Short Answer

Expert verified
(a) increases with increase in temperature

Step by step solution

01

Understanding Chemical Kinetics

Chemical kinetics is the study of the speed or rate of a chemical reaction under various conditions. By altering different physical conditions like temperature, pressure and concentration, we can observe different rates of reactions.
02

Understanding the Effect of Temperature on Reaction Rate

According to the Collision Theory, for a reaction to occur, particles must collide with enough energy and in the correct orientation. As the temperature increases, the kinetic energy of the particles also increases. This means they move faster, and the frequency of collisions increases, resulting in an increased rate of reaction.
03

Analyzing the Options

Given this information, we can analyze the answer choices. (a) states that the rate of reaction increases with increase in temperature, which aligns with our understanding. (b) and (c) don't align with the discussed principles of chemical kinetics. (d) is also incorrect because the effect of temperature on the rate of reaction is a well-established principle.

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Most popular questions from this chapter

The rate of a reaction, on increasing concentration of the reactants (a) increases (b) decreases (c) remains unaltered (d) none of these

The statement which is true in respect of order of a reaction is (a) it is always a whole number (b) it is always a fraction (c) it may be zero, a whole number or a fraction (d) it can never be a fraction

On increasing temperature, rate of a reaction increases, because (a) the number of activated molecules increases (b) the number of activated molecules decreases (c) the number of activated molecules becomes zero (d) the activated molecules move with a low speed

In a first-order reaction, the conc. of reactant decreases from \(1.0 \mathrm{M}\) to \(0.25 \mathrm{M}\) in 20 minutes. The value of \(k\) is (a) \(0.6932\) (b) \(6.932\) (c) \(0.06932\) (d) none of these

The specific rate constant of a first-order reaction depends on (a) concentration of the reactants (b) time (c) concentration of the products (d) temperature
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