What happens when there is an increase in temperature for a reaction rate? Select all that apply.
It increases the chance that the reaction will be endothermic
It increases the activation energy of a reaction
It increases the total number of molecular collisions that occur
It increases the percentage of collisions that result in a reaction
the last option is correct, but there are two options to choose so what would the other one be ?
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What happens when there is an increase in temperature for a reaction rate? Select all that apply.
Explain why each change in conditions would affect the reaction rate of reaction when sodium metal...
Explain why each change in conditions would affect the reaction rate of reaction when sodium metal reacts with chlorine gas to form NaCl? As a catalyst is added to the mixture the reaction rate will increase because As temperature decreases the reaction rate will decrease because As volume decreases the reaction rate will increase because As concentration increases the reaction rate will increase because As the surface area of a molecule is decreased the reaction rate will decrease because As...
8 of 15 If the sign of a reaction rate is positive, that means The reaction...
8 of 15 If the sign of a reaction rate is positive, that means The reaction does not go in the reverse direction It must be the rate for the appearance of a product. The reaction is an endothermic reaction. The reaction is an exothermic reaction. 9 of 15 Temperature increase often increases the reaction rate at least initially of both endo- as well as exothermic reactions. Which explanation best supports this? All reactions start out initially as endothermic reactions...
Explain why each change in conditions would affect the reaction rate of reaction when sodium metal...
Explain why each change in conditions would affect the reaction rate of reaction when sodium metal reacts with chlorine gas to form NaCl? As volume increases the reaction rate will decrease because ? As concentration increases the reaction rate will increase because? As the surface area of a molecule is increased the reaction rate will increase because? As temperature decreases the reaction rate will decrease because? As pressure decreases the reaction rate will decrease because? As a catalyst is added...
(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...
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!
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the Arrhenius Equation for the rate constant ka zpe is the number of collisions per second, and p is the orientation factor For the reaction A B , z = 1012 collision per second, and p = 0.5. At a temperature T 300.0 K, how many effective collisions occur per second CASO SO,000 17. The rate constant (ka) of a reaction is 3.46 X 102/sec at 298 K. What is the rate constant (kz) at 350.0 K, if the activation...
please help with- chem lab: Reaction Rates After Thought (1-4d) THANKS!! REACTION RATES The After Thought...
please help with- chem lab: Reaction Rates After Thought (1-4d)
THANKS!!
REACTION RATES The After Thought 1. Cross out the incorrect statement(s) dealing with factors affecting the rate of a chemical reaction. The rate of a chemical reaction increases: - with increasing concentration of a reactant since the number of collisions increases - with decreasing temperature since the activation energy is reduced - by pulverizing a reacting solid because its exposed surface area increases - with the addition of a...
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...
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8 of 15 If the sign of a reaction rate is positive, that means The reaction does not go in the reverse direction It must be the rate for the appearance of a product. The reaction is an endothermic reaction. The reaction is an exothermic reaction. 9 of 15 Temperature increase often increases the reaction rate at least initially of both endo- as well as exothermic reactions. Which explanation best supports this? All reactions start out initially as endothermic reactions...
(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...
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...
the Arrhenius Equation for the rate constant ka zpe is the number of collisions per second, and p is the orientation factor For the reaction A B , z = 1012 collision per second, and p = 0.5. At a temperature T 300.0 K, how many effective collisions occur per second CASO SO,000 17. The rate constant (ka) of a reaction is 3.46 X 102/sec at 298 K. What is the rate constant (kz) at 350.0 K, if the activation...
please help with- chem lab: Reaction Rates After Thought (1-4d)
THANKS!!
REACTION RATES The After Thought 1. Cross out the incorrect statement(s) dealing with factors affecting the rate of a chemical reaction. The rate of a chemical reaction increases: - with increasing concentration of a reactant since the number of collisions increases - with decreasing temperature since the activation energy is reduced - by pulverizing a reacting solid because its exposed surface area increases - with the addition of a...
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UUUUUUUUU 4. For an endothermic reaction: Is the energy of the products higher or lower than reactants? (circle one) b. Is heat released or absorbed c is the sign for AH positive or negative? S a. Since reactions are favorable when they release energy and form lower energy products, which reaction - (a) or (b) - is favorable? b. What is the sign (+ or -) for the energy (enthalpy) value of a favorable reaction Manager: Check to ensure that...
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