Activity 3 A
Subject:ChemistryPrice: Bought3
Activity 3 A. Direction: Express the rate of the following chemical reactions in terms of the change in concentration of the reactants or products. 5 pts each 1. 2N20 (g) - 2N2(g) + 02(8) 2. N2(g) + 3H2(g) - 2NH,(B) 3. 2CA H10(g) + 13 02(g) - 8CO2(g) + 10H20(g) B. Direction: Write the rate of the reaction based on the situation described. 2 pts each 1. [A Jo =0.16 M rate = 3.2x10 M/s Order: [A Jo=0.48M rate = 9.6x102 M/s rate= 2. [Ajo =0.012 M rate = 1.5x103 M/s Order: [AJo=0.015M rate = 1.5x10 M/s rate = C. Direction: Predict the factor by which the rate of the reaction is multiplied (i.c., 1, 2, 3, 4, 1/2, 1/4, etc.) in the following conditions. 2 pts each 1. Multiplying [A] by 1/ for a second-order reaction. 2. Increasing [A] by 4 times its original value for a zero-order reaction. 3. Tripling [A] of a first-order reaction. Conceptualization: 1. How does the half-life of second-order reactions depend on the concentration of the reactant? 3pts 2. Differentiate the two types of catalytic reactions. 4 pts 3. How does temperature affect the rate of a reaction? 3 pts Evaluation Direction: Answer True if the statement is correct and False if the statement is wrong. I pt each 1. One mole of any nonvolatile, nonelectrolyte solute will elevate the boiling point of a given amount of solvent by a constant factor depending on what the solvent is. 2. The van't Hoff factor is equal to the number of ions in one formula unit of an electrolyte solute. 3. The rate of reaction is not affected by the number of reactants. 4. Thermochemistry is the study of energy or heat flow that accompanies a chemical reaction and/or physical transformations. 5. The rate of law for a reaction can be experimentally determined through the method of final rates. 6. Contact between the molecules of reactants is not necessary in order for a reaction to occur.
