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A student dissolves 12.1 g of potassium chloride (KC) in 300. g of water in a well-insulated open cup. She then observes the temperature of the water fall from 23.0 °c to 21.3 °c over the course of 7.7 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: KCI (s) - K+ (aq) + Cl(aq)

A student dissolves 12.1 g of potassium chloride (KC) in 300. g of water in a well-insulated open cup. She then observes the temperature of the water fall from 23.0 °c to 21.3 °c over the course of 7.7 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: KCI (s) - K+ (aq) + Cl(aq)

General Chemistry - Standalone book (MindTap Course List)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter18: Thermodynamics And Equilibrium
Section: Chapter Questions
Problem 18.109QP: Silver carbonate, Ag2CO3, is a light yellow compound that decomposes when heated to give silver...
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A student dissolves 12.1 g of potassium chloride (KC¹)in 300. g of water in a well-insulated open cup. She then observes the temperature of the water fall from 23.0 °C to 21.3 °C over the course of 7.7 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: KCl (s) K+ (aq) + Cl¯ (aq) You can make any reasonable assumptions about the physical properties
Transcribed Image Text:A student dissolves 12.1 g of potassium chloride (KC¹)in 300. g of water in a well-insulated open cup. She then observes the temperature of the water fall from 23.0 °C to 21.3 °C over the course of 7.7 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: KCl (s) K+ (aq) + Cl¯ (aq) You can make any reasonable assumptions about the physical properties
experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction. Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. Calculate the reaction enthalpy ΔΗ per mole of KC1. rxn exothermic O endothermic O neither KJ kJ mol x10 X
Transcribed Image Text:experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction. Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. Calculate the reaction enthalpy ΔΗ per mole of KC1. rxn exothermic O endothermic O neither KJ kJ mol x10 X
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