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4) Which reaction is endothermic? Exothermic? Explain your answer. cvecse Reactants A LB Products ABL Reactants Products AB PROGRESS OF REACTION PROGRESS oF REACTION

4) Which reaction is endothermic? Exothermic? Explain your answer. cvecse Reactants A LB Products ABL Reactants Products AB PROGRESS OF REACTION PROGRESS oF REACTION

Chemistry
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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4) Which reaction is endothermic? Exothermic? Explain your answer. Transition State fransibon State A forward fonward cevecse cEverse Reactants Reactants AB. Products AB Products AB PROGRESS OF REACTION PROGRESS OF REACTION Predict the rate of the reaction in the following. Assume that the substances below are reactants for different reactions. Indicate if the reaction will be slower, faster, or have the same rate. Normal condition Changed condition Factor Reaction rate a) 20 % HCI 5 % HCI Concentration Slower b) 276 K 315 K Temperature Faster c) 2H,O2 → 2H,O + Oz addition of iron (II) oide Catalyst Faster d) A cube of sugar powdered sugar Surface area Faster e) 5 sampalok cubes 1 sampalok cube Concentration Slower ) 52 g of N2OH 65 g of NaOH Concentration Faster 9) 3.68 x 10% atoms of Li 9.25 x 10 atoms Li Concentration Slower h) 500 K, 4.5% Barium 600K, 4.5% Barium Temperature Faster ) 48 g powdered zinc 48 g zinc pellets Surface area Slower ) Starch + water Starch + water + amylase Catalyst Faster
Transcribed Image Text:4) Which reaction is endothermic? Exothermic? Explain your answer. Transition State fransibon State A forward fonward cevecse cEverse Reactants Reactants AB. Products AB Products AB PROGRESS OF REACTION PROGRESS OF REACTION Predict the rate of the reaction in the following. Assume that the substances below are reactants for different reactions. Indicate if the reaction will be slower, faster, or have the same rate. Normal condition Changed condition Factor Reaction rate a) 20 % HCI 5 % HCI Concentration Slower b) 276 K 315 K Temperature Faster c) 2H,O2 → 2H,O + Oz addition of iron (II) oide Catalyst Faster d) A cube of sugar powdered sugar Surface area Faster e) 5 sampalok cubes 1 sampalok cube Concentration Slower ) 52 g of N2OH 65 g of NaOH Concentration Faster 9) 3.68 x 10% atoms of Li 9.25 x 10 atoms Li Concentration Slower h) 500 K, 4.5% Barium 600K, 4.5% Barium Temperature Faster ) 48 g powdered zinc 48 g zinc pellets Surface area Slower ) Starch + water Starch + water + amylase Catalyst Faster
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