(a) Select all of the correct statements about reaction rates from the choices below. The lower the rate of a reaction the longer it takes to reach completion. O Reaction rates always increase as masses of solid reactants increase. The higher the rate of a reaction the longer it takes to reach completion. A balanced chemical reaction is necessary to relate the rate of reaction to the concentration of a reactant. O Reaction rate constants decrease with increasing temperature. O Catalysts increase reaction rates. Reaction rates decrease with increasing temperature.

(a) Select all of the correct statements about reaction rates from the choices below. The lower the rate of a reaction the longer it takes to reach completion. O Reaction rates always increase as masses of solid reactants increase. The higher the rate of a reaction the longer it takes to reach completion. A balanced chemical reaction is necessary to relate the rate of reaction to the concentration of a reactant. O Reaction rate constants decrease with increasing temperature. O Catalysts increase reaction rates. Reaction rates decrease with increasing temperature.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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2. Which of the following is most similar to a system at equilibrium? * O a shift change at an assembly plant involving two crews of 100 employees O a popcorn maker when the popcorn starts to pop the water in a pool when swimmers start to splash water out of the pool a burning candle salt concentrations in the oceans
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Catalysts affect reaction rates, but do not change either the equilibrium or the spontaneity of a reaction. True or False.
Are chemical reactions reversible? In other words, is it possible the reverse the direction of a reaction to convert the reaction products back into reactants?
Select all of the correct statements about equilibrium from the choices below.At equilibrium the rates of forward and reverse reactions are equal. As a reaction proceeds forward toward equilibrium the forward rate drops. At equilibrium all reactions stop. Reactants are transformed into products even at equilibrium. As a reaction proceeds forward toward equilibrium the reverse rate constant rises.As a reaction proceeds forward toward equilibrium the forward rate constant drops.
Tell whether the reaction will speed up or slow down and why. 1. Large chunks of limestone are added to water instead of powdered limestone? 2. Manganese dioxide catalyzes the decomposition of hydrogen peroxide? 3. The concentration of nitric acid added to iron metals decreased? 4. The temperature of water is cooled before being mixed with magnesium hydroxide?
(a) Select all of the correct statements about reaction rates from the choices below. The lower the rate of a reaction the longer it takes to reach completion.Reaction rates increase with increasing temperature.The slowest step in a reaction is called the rate-determining step.Catalysts increase reaction rates.The fastest step in a reaction is called the rate-determining step.As a reaction progresses its rate goes down.Reaction rates can show little change as masses of solid reactants increase.
For any reversible reaction containing a double arrow such as: Reactants ⟷⟷ Products the statement "equilibrium shifts to the right" means: Group of answer choices; - The reaction can only go in the forward direction. - The reaction can only go in the reverse direction. - A stress will cause a portion of reactants to disappear and some additional products to appear. - A stress will cause a portion of products to disappear and some additional reactants to appear
Which statement best describes general equilibrium? O Equilibrium is reached when the reaction stops. O There is only one set of equilibrium concentrations that equals the Kc value. At equilibrium, the rate of the forward reaction is the same as the rate of the reverse reaction. At equilibrium, the total concentration of products equals the total concentration of reactants.
Select all of the correct statements about reaction rates from the choices below. 1. The lower the rate of a reaction the longer it takes to reach completion.2. The rate of a slow step has more effect on the overall reaction rate than the rate of a fast step.3. Reaction rates decrease with increasing temperature.4. As a reaction progresses its rate goes down.5. Solid catalysts increase reaction rates as their surface areas increase.6. The rate of a reaction is independent of temperature.7. Reaction rates can show little change as masses of solid reactants increase.
Which of the following occurs when reactants are removed from a chemical reaction in solution or the gas phase at equilibrium? * O Product increases, so the equilibrium shifts to produce more products. O Reactant increases, so the equilibrium shifts to produce more products. O Reactants decreases, so the equilibrium shifts to produce more reactants. O Product decreases, so the equilibrium shifts to produce more reactants. The reaction [20 CO2 + 22 H:O → 2 Cz0H22 + 31 O:], in general terms, is: Reversible O Irreversible The reaction [N:O: = 2 NO: ], in general terms, is: * Reversible Irreversible
The following represents the effect of time on the concentration during a reaction. The upper line represents a reactant concentration and the lower line the concentration of a product. Which of the following statements is not correct? Concentration B C Time → O Between points A and D the reactant concentration is decreasing. O Between points B and C the product concentration is increasing. At point D the rate of the forward and reverse reactions are the same. O At point C the rate of product breakdown equals that of reactant consumption.