Pre-Lab Preparation1. Read about chemical reaction rates and rate laws. Take notes on how stoichiometry affectsrate (for instance, if 2A + B → C, how do the reaction rates for A and B compare?), what arate law is, and the three most common rate orders.2. For the reaction below (the one you will be studying during this lab), write an expression forthe reaction rate in terms of changing concentration over time for each species in the overallreaction (one is given as an example).S20g (aq) + 31 (aq) = 2S0, (aq) +l3 (aq)-A[S,0,)rate =AtimeI-a. What does it mean if a concentration change over time is written as being negative?b. What does it mean if a concentration change over time is written as being positive?3. What does activation energy refer to? There are two equations which may be used tocalculate this, one with an exponent and a linear form of the same equation. Write downboth.4. What does collision frequency refer to?

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1. Read about chemical reaction rates and rate laws. Take notes on how stoichiometry affects rate (for instance, if 2A + B→ C, how do the reaction rates for A and B compare?), what a rate law is, and the three most common rate orders.

1. Read about chemical reaction rates and rate laws. Take notes on how stoichiometry affects rate (for instance, if 2A + B→ C, how do the reaction rates for A and B compare?), what a rate law is, and the three most common rate orders.

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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Typical Chemical Potential Energy (PE) Diagram for an Exothermic Reaction A catalyst provides an alternate pathway for a reaction to occur. The alternate pathway has a lower activation energy (AE), meaning that the reactant molecules do not need to collide with as much energy in order for a reaction to occur, so more collisions result in a reaction, so the reaction rate is faster. Chemical Potential Energy (Enthalpy) Note that adding a catalyst does not change the amount of energy released (AH) for the reaction. Activation Energy (AE) with a catalyst PE of Reactants AH PE of Products Rxn Progress What effect does a catalyst have on the stoichiometry of the reaction? What effect does the catalyst have on the mechanism of a reaction? AE wlo a catalyst
When given a chemical equation, how may I find the rate expression, concentration, average reaction rate, mols, and mass?
why surface area of reactants and the presence of a catalyst affects the rate of chemical reaction?
Refer to the following reaction and rate law equation. A + 2B →C r = k [A] [B]² What will happen to the overall rate of reaction if the concentration of A is doubled and the concentration of B is halved? The rate of reaction will be half the initial rate. The rate of reaction will be quadruple (4x) the initial rate. The rate of reaction will remain the constant. The rate of reaction will be double (2x) the initial rate.. The rate of reaction will be a quarter of the initial rate.
Given the equation: rate = k[H2O2]m[I-]n Which of the following statements is (are) true about the orders, m and n? a. m and n are equal to each other in all cases b. m and n are independent from the molar coefficients of the reactants in the balanced chemical equation c. m and n must be determined by experiment d. m and n are equal to the molar coefficients of H2O2 and I- in the balanced chemical reaction, respectively
Which of the following statements is true about reaction rates? A Reaction rates can be predicted from the coefficients of the balanced equation. B Reactants usually disappear faster than the products appear. C Reactants usually disappear slower than the products appear. D Reaction rates can only be determined by experimentation.
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2. Here are representations of a reaction: A + B> products Unshaded spheres represent A molecules. Shaded spheres represent B molecules. Trial 1 Trial 2 Trial 3 Trial 4 Rate = 1 Rate = 1 Rate = 4 Rate = 4 a. What is the order with respect to A (unshaded)? Explain how you determined this. b. What is the order with respect to B (shaded)? Explain how you determined this. c. What is the rate equation for this reaction? Explain how you determined this.
The rate of a reaction is how quickly the reaction goes to completion. If two reactions have the same amount of reactant, increasing the rate does not increase the amount of product produced, it simply reduces the time that it takes to make the product. Using the internet , research the one factors below that affect the rate of a chemical reaction. 1. Reactant concentration ( add an example and be very detailed add graphs as well) Be sure to include the following terms as they relate to chemical reactions: collision theory Be very detailed potential energy diagrams be very detailed activation energy be very detailed Your work should be written in complete sentences, and assume your audience is grade 11 chemistry students who do not understand this unit. Make sure all research is put into your own words!
Which of the following statements are false with respect to rate laws? Select all that apply. □ Catalysts can't be included in the rate law. □ Intermediates can't be included in the rate law. □ Products can't be included in the rate law. □ Rate Laws don't have to include a rate constant.□ Reactants can't be included in the rate law. □ The orders with respect to each species is directly related to the coefficient in the overall reaction
KINETICS AND EQUILIBRIUM Deducing a rate law from initial reaction rate data Some measurements of the initial rate of a certain reaction are given in the table below. [N₂] [H₂] initial rate of reaction 1.59M 1.69 M 8.00 M/s 92.6M/s 1.51 M/s 5.41M 1.69 M 1.59M 0.319M Use this information to write a rate law for this reaction, and calculate the value of the rate constant k. Round your value for the rate constant to 2 significant digits. Also be sure your answer has the correct unit symbol. rate = k 0 x10 ロ・ロ X 0/5