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: The rate of reaction can be defined as the change in the positive change in the concentration of…

A: Rate of reaction is defined as change of rate of  reactant concentrations with respect to time .

Q: Express the rate of the following chemical reactions in terms of the change in concentration of the…

A: The rate of reaction is defined as the change in the concentration of reactant per unit time per…

Q: Which of the following is true of the rates of most chemical reactions?    A. The initial rate is…

A: The reaction rate depends on the concentration of reactants.

Q: Reaction Rates, Activation Energy, and Catalysts Base your answers to practice questions 9 through…

A: Please find the attached images for answer

Q: Explain the following : (a) A lump of coal burns at moderate rate in air while coal dust burns…

A: Average rate of reaction is defined as ratio of change in concentration of reactant or product by…

Q: When we state a reaction is “zero order with respect to a specific concentration:, what will happen…

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Q: This graph shows changes in concentration during a chemical reaction. Use the definition of reaction…

A: The reaction rate or rate of reaction is the speed at which a chemical reaction takes place, defined…

Q: Explain the time dependence of the rates of a chemical reaction.

A: Rate of the chemical reaction is defined as the speed at which the reactants disappear or the…

Q: The rate constant for a reaction can be increased by ______ the stability of the reactant or by…

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Q: Why are homogeneous catalysts harder to sepårate from products and leftover reactants than are…

A: Catalysts are the chemical compounds which are used in the chemical reaction which increases the…

Q: Describe four conditions that affect the rate of a reaction and use the principles of the collision…

A: As per Collision theory, Reaction rate is given : Rate = p ZAB e(-Ea/RT) p is the orientation…

Q: What are the factors affecting the rate of reaction and an example for each factors

A: The rate of the reaction majorly depends upon the temperature, at which reaction is carried out, the…

Q: Doubling the concentration of a reactant increases the rate of a reaction four times. With this…

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Q: Two nitric oxide molecules react with one another in an elementary reaction. What is the…

A: Molecularity: The molecularity of an elementary reaction is the number of reactant species (atoms,…

Q: In some reactions, the spatial orientation of the reactant molecules is a very important factor in…

A: A question based on kinetic theory, which is to be accomplished.

Q: Suggest a reason why, when given the rate of a chemical reaction, it is importantto know that the…

A: Rate of a chemical reaction is defined as the speed with which the reaction proceeds. It determines…

Q: Guidelines about the specific rate constant "k" state that the value that is determined: O does not…

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Q: Determine the rate of a reaction by measuring the concentration of a reactant or product as a…

A: The rate of reaction has to be determined by measuring the product concentration (or) reactant…

Q: 1. Examine the image, which shows four chemical systems of colliding molecules. Which chemical…

A: Reaction rate is the measurement of speed of the reaction. It says how fast the reaction takes…

Q: Explain how enzymes increase the reaction rate for processes in cells of living organisms by…

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first 3 sub-parts…

Q: The change in temperature from 10 °C to 20 °C is found to double the rate of a particular chemical…

A: Rate of reaction depends on temperature . temperature increase rate of reaction also increase.

Q: What is a specific rate constant (k)? Please explain in simple terms. How is this any different from…

A: Take the example of a reaction  X -> P where X is the reactant and P is the product.  With time…

Q: account for the relationship between the rate of a reaction and its activation energy, and the…

A: The relationship between the rate of a reaction and its activation energy - The activation energy of…

Q: Define the rate of a chemical reaction and express the rate in terms of the concentrations of…

A: The rate of chemical reaction has to be defined. The rate should be expressed in terms of reactant…

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: c) Transition elements exhibit many chemical properties including acting as catalysts. Explain…

A: Given :  We have to discuss the property why transition metal act as heterogenous and homogenous…

Q: Which of the following statements is correct? a. The rate of a reaction decreases with passage of…

A: Given statements are related to kinetics of the reaction. means all given options are related to…

Q: Why does reaction rate matter in life?

A: Optimization of rate of reaction is play an important role in the best performance of the reaction.…

Q: Describe one example in real life of a factor affecting the rate of a specific reaction.

A: There are many examples in real life of a factor affecting the rate of a specific reaction.

Q: Which factor is most sensitive to changes in temperature—the frequency of collisions, the…

A: The  factor which is most sensitive to changes in temperature has to be given,

Q: Given the image, what is the rate law of the reaction.

A: Let the rate law of the reaction be: Rate=k[NO2]a[O3]b                     ...... (1) Putting the…

Q: Do catalysts affect the overall enthalpy change for a reaction, the activation energy, or both?

A: The substances that are used to increase the speed of the reaction are termed catalysts. Their…

Q: Define the following terms:(i) Order of a reaction.(ii) Activation energy of a reaction.

A: To find: The definition for Order of a reaction and Activation energy of a reaction

Q: How did the rate change when the reaction was performed at lower temperature? why?

A: The rate of reaction is directional proportional to the reaction temperature. When temperature of a…

Q: What is the activation energy of the reaction? Number Units What is the frequency factor for the…

A: Arrhenius equation is:  k = A e-Ea/RT Where, k = rate constant, Ea = Activation energy, R = Gas…

Q: Which statement is INCORRECT with regard to kinetics?

A: Rate of reaction tells us change in concentration of reactant and product with time .It is expressed…

Q: Explain the difference between the average rate of reaction and the instantaneous rate of reaction.

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Q: What is the rate constant for the reaction?

A: Rate constant is the proportionality constant in the rate law. Rate law is the mathematical…

Q: Consider the graph below of the concentrations of different chemical species as a function of time…

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Q: How does low concentration affect reaction rate? A. It decreases the amount of reactants B. It…

A: Rate of a reaction is directly proportional to Concentration.

Q: For a reaction with activation energy of 44 kJ and heat of reaction of -31 kJ and product energy of…

A: Given  Activation energy = 44 kJ Energy of products = 90 kJ Heat of reaction = -31kJ Energy of…

Q: When calculating a reaction time interval rate, why is it referred to as an average rate?

A: Since you have asked multiple questions, we will solve first question for you. If you want any other…

Q: Identify the term initial rate of reaction

A: The initial rate of a reaction is the instantaneous rate of a reaction at the start of the…

Q: What is the reaction constant and the rate law of the reaction in the table?

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Q: Consider the following reaction and predict the new rate of the reaction if the concentration of A…

A: Given reaction is SN1 ( Nucleophilic substitution first order reaction)  .This is two step reaction…