Why is the reaction rate for reactants defined as the negative  of the change in reactant concentration with respect to time, whereas for products it is defined as the change in reactant concentration with respect to time (with a positive sign)?

Q: How does changing temperature or concentration of reacting particles affect the rate at which…

A: reaction rate is directly proportional to temperature

Q: When the concentration of reactant increases, what effect will this have on the rate of the reaction…

A: All reactions possess a particular rate. That rate always carries direct relation with reactant's…

Q: 47)In a catalyzed chemical reaction, one function of a catalyst is to A) increase the number of…

A: The catalyst is a chemical substance that increases the rate of the reaction without participating…

Q: What is the effect of increasing temperature on the rate, rate constant and activation energy?…

A: Solution - According to collision theory as the temperature increases number of collisions increases…

Q: Is it possible that the reaction rate hastens as concentration decreases? Why or why not?

A: It is not possible to the reaction rate hastens as co concentration decreases . Because as the…

Q: A catalyst increases the rate of a reaction by Group of answer choices increasing the concentration…

A: Chemical kinetics is the study of the reaction that how fast or slow a reaction is taking place. The…

Q: Which of the following is not a factor that controls the rate of the reaction?

A: Given : statement

Q: A chemical reaction is endothermic and has an activation energy that is twice the value of the…

A: The reaction energy profile diagram for a chemical reaction is plotted between extent of reaction…

Q: How do the activation energy and the energy of reaction determine if a chemical process is…

A: Activation energy is the minimum amount of energy required to start a reaction.  Every reaction…

Q: ‘Collision theory states that all collisions between reactant particles will result in a chemical…

A: The collision theory of reaction rates is based on the kinetic theory of gases which assumes that,…

Q: give an example of a reaction that occurs immediately and an example of a reaction that occurs…

A: Most severe allergic reactions occur within seconds or minutes after exposure to the allergen

Q: True or False 7. The oxidation of magnesium metal is an example of a chemical reaction that occurs…

A: A reaction is said to be irreversible if it only goes one way and the products do not combine with…

Q: Which of the following theoretical factors decreases the rate of a reaction? (a) decrease collision…

A: The collision theory says that the reactant molecules collide with each other and some collision…

Q: A catalyst is a substance that is produced during one step of a reaction mechanism and used up in a…

A: False

Q: Select the factors that influence the rate of a chemical reaction. adding a catalyst to the reaction…

A:

Q: In the field of chemical kinetics, explain the concept of activation energy and its significance in…

A: Introduction: Activation energy is a key concept in chemical kinetics, representing the minimum…

Q: rate law equation expresses how   Question 16 options:   the concentrations of entities in a…

A:

Q: Define the term activation energy. Using diagrams, explain how the presence of a catalyst can help…

A: Activation energy (Ea): Products are formed only when reactant molecules come close and collide with…

Q: For an exothermic reaction, what does the activation energy of the reverse reaction equal? the…

A:

Q: True or False?  The relationship between the activation energy of the forward and reverse reactions…

A: We know that activation energy is the minimum amount of energy that is to be added to the energy of…

Q: For an endothermic reaction, which statement is true? The activation energy for going from…

A: The activation energy for the endothermic reaction is much greater than for the exothermic reaction.…

Q: :Activation energy (Eact) is

A: We have to tell which option is correct

Q: What is the relationship between each of the following factors and the reaction rate of temperature,…

A: Rate of any reaction is given by  Rate of reaction = K X product of ( [reactants]order ) where order…

Q: iy the factors that will increase the rate of a chemical reaction. Select all that apply asing the…

A: Ans. Option 1,2,3 are correct which increases the rate of reactions.

Q: 14. The first graph below represents the energy level diagram for an uncatalyzed reaction. Which…

A:

Q: Why do most chemical reactions do not occur in a single step?

A: In a chemical reaction, the reactants react to form the products. For example, hydrogen and chlorine…

Q: The following figure represents chemical reaction before and after using a catalyst and from the…

A:

Q: Describe factors that affect chemical reaction rates.

A: Reaction rate is defined as the speed which the reaction proceeds. It is directly proportional to…

Q: How is the rate of concentration expressed in terms of the concentration of the reactants of…

A: Rate is basically the speed with which the reaction is taking place i.e. how much the reaction is…

Q: How does an increase in temperature affect rate of reaction? Explain this effect in terms of the…

A: The rate of reaction increases with increase in temperature, and rate of reaction decreases with…

Q: true or false: A balanced chemical reaction is necessary to relate the rate of reaction to the…

A: Here the statement is given that a balanced chemical reaction is necessary to relate the rate of…

Q: A catalyst increases the activation energy of a reaction and thus facilitates the reaction True…

A: