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As the temperature of a reaction is increased, the rate of the reaction increases because the...
1. If the rate constant of a reaction increases by 2.5 when the temperature is increased...
1. If the rate constant of a reaction increases by 2.5 when the temperature is increased from 25 C to 34 C, then what is the activation energy (in kJ/mole) of the reactions? 2. If a reaction is first order with a rate constant of 4.48 x 10 ^ -2 sec ^-1, how long is required for 3/4 of the initial concentration of reactant to be used up? 3. Which statement is true or NOT regarding the experimental determination of...
The kinetic molecular theory of gases predicts pressure to increase as the temperature of a gas...
The kinetic molecular theory of gases predicts pressure to increase as the temperature of a gas increases because: I. the average kinetic energy of the gas molecules increases. II. gas molecules collide more frequently with the container walls. III. there are more molecules per unit volume after raising the temperature. IV. the elasticity of the molecules increases. V. there are less molecules per unit volume after raising the temperature. a. I and II b. I and III c. II and...
12.) Which of the following factors influence the rate of a reaction? A) Temperature B) Reactant...
12.) Which of the following factors influence the rate of a reaction? A) Temperature B) Reactant concentration C) A catalyst D) Temperature, reactant concentration, and a catalyst 13.) A fast reaction rate for a chemical reaction is dependent on: A) having a large activation energy B) having a small activation energy C) being exothermic D) being endothermic 14.)) A catalyst is A) a substance that decreases the energy of the products. B) a product in a chemical reaction. c) a...
If the rate constant of a reaction increases by a factor 2.5 when the temperature is...
If the rate constant of a reaction increases by a factor 2.5 when the temperature is increased from 22 °C to 35 °C, then what is the activation energy (in kJ/mole) of the reaction? A) 5.3x10^4 kJ/mol B) -5.3x10^1 kJ/mol C) 0.45 kJ/mol D) 5.3x10^1 kJ/mol E) -4.5x10^5 kJ/mol
Thank you everymuch I will rate quickly when answered! Chemical reactions occur when molecules or atoms...
Thank you everymuch I will rate quickly when answered!
Chemical reactions occur when molecules or atoms collide, the bonds between atoms are broken, and new bonds are formed. Breaking the bonds of the reactants requires energy; bond formation releases energy Which of the following statements regarding energy changes during a reaction are true? The energy of a collision between atoms or molecules must be greater than or equal to the activation energy (Ea) for bonds to be broken. When the...
7. An increase in the temperature of the reactants causes an increase in the rate of...
7. An increase in the temperature of the reactants causes an increase in the rate of reaction. The best explanation for this behavior is that as the temperature increases, a. the fraction of collisions with total kinetic energy greater than Ea increases. b. the concentration of reactants increases. c. the activation energy remains the same. d. the collision frequency decrease
22. The rate law for the chemical reaction shown below has been determined experimentally: Rate =...
22. The rate law for the chemical reaction shown below has been determined experimentally: Rate = k[O3][CI]. What is the overall order of the reaction? 03(g) + Cl(g) → O2(g) + ClO(g) a. 3 b. 5 d. 2 8. The following data were obtained for the hypothetical reaction A+B → products. [A]o (M) 4.0 2.0 4.0 [B]. (M) 6.0 6.0 3.0 Initial Rate (M/s) 1.60 0.80 0.40 What is the overall order of this reaction? a. 3 b. 12 c....
An decrease in temperature increases the reaction rate because temperature affects the equilibrium constant of the...
An decrease in temperature increases the reaction rate because temperature affects the equilibrium constant of the reaction a smaller fraction of the collisions have the correct orientation of molecules. the activation energy of the reaction will decrease. less collisions will have enough energy to exceed the activation energy. the activation energy of the reaction will increase. The equilibrium constant, K_p, for the reaction H_2(g) + I_2(g) doubleheadarrow 2HI(g) is 10.0 at 450 degree C. A rigid cylinder at that temperature...
(6.4) The rate of a chemical reaction increases with an increase in the concentration of one...
(6.4) The rate of a chemical reaction increases with an increase in the concentration of one or more reactants. This is best explained by which statement? Select one: a. The higher concentration of reactants increases the activation energy of the reaction. Ob. The higher concentration of reactants increases the potential energy of the molecules. c. The higher concentration of reactants increases the frequency of collisions between molecules. d. The higher concentration of reactants increases the temperature of the molecules. Check...
Il Vodafone - Stay Home 8:51 PM Question 1 of 33 Submit The reaction rate of...
Il Vodafone - Stay Home 8:51 PM Question 1 of 33 Submit The reaction rate of a reaction at 60 °C will greater than at 30°C because – A) the higher temperature leads to greater surface area on solid or liquid reactants. B) the reactants at 60°C will be moving with too great of a speed to collide effectively. C) the activation energy will be lower at 60°C. D) there is a greater proportion of reactants with the necessary kinetic...
12.) Which of the following factors influence the rate of a reaction? A) Temperature B) Reactant concentration C) A catalyst D) Temperature, reactant concentration, and a catalyst 13.) A fast reaction rate for a chemical reaction is dependent on: A) having a large activation energy B) having a small activation energy C) being exothermic D) being endothermic 14.)) A catalyst is A) a substance that decreases the energy of the products. B) a product in a chemical reaction. c) a...
Thank you everymuch I will rate quickly when answered!
Chemical reactions occur when molecules or atoms collide, the bonds between atoms are broken, and new bonds are formed. Breaking the bonds of the reactants requires energy; bond formation releases energy Which of the following statements regarding energy changes during a reaction are true? The energy of a collision between atoms or molecules must be greater than or equal to the activation energy (Ea) for bonds to be broken. When the...
22. The rate law for the chemical reaction shown below has been determined experimentally: Rate = k[O3][CI]. What is the overall order of the reaction? 03(g) + Cl(g) → O2(g) + ClO(g) a. 3 b. 5 d. 2 8. The following data were obtained for the hypothetical reaction A+B → products. [A]o (M) 4.0 2.0 4.0 [B]. (M) 6.0 6.0 3.0 Initial Rate (M/s) 1.60 0.80 0.40 What is the overall order of this reaction? a. 3 b. 12 c....
An decrease in temperature increases the reaction rate because temperature affects the equilibrium constant of the reaction a smaller fraction of the collisions have the correct orientation of molecules. the activation energy of the reaction will decrease. less collisions will have enough energy to exceed the activation energy. the activation energy of the reaction will increase. The equilibrium constant, K_p, for the reaction H_2(g) + I_2(g) doubleheadarrow 2HI(g) is 10.0 at 450 degree C. A rigid cylinder at that temperature...
(6.4) The rate of a chemical reaction increases with an increase in the concentration of one or more reactants. This is best explained by which statement? Select one: a. The higher concentration of reactants increases the activation energy of the reaction. Ob. The higher concentration of reactants increases the potential energy of the molecules. c. The higher concentration of reactants increases the frequency of collisions between molecules. d. The higher concentration of reactants increases the temperature of the molecules. Check...
Il Vodafone - Stay Home 8:51 PM Question 1 of 33 Submit The reaction rate of a reaction at 60 °C will greater than at 30°C because – A) the higher temperature leads to greater surface area on solid or liquid reactants. B) the reactants at 60°C will be moving with too great of a speed to collide effectively. C) the activation energy will be lower at 60°C. D) there is a greater proportion of reactants with the necessary kinetic...
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