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A student dissolves 13.8 g of lithium chloride (LiC1)in 200. g of water in a well-insulated open cup. He then observes the temperature of the water rise from 22.0 °C to 37.2 °C over the course of 5.2 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: LiCl (s) Lit (aq) + Cl(aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do the 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 AHxn per mole of LiCl. exothermic O endothermic Oneither kJ mol X

A student dissolves 13.8 g of lithium chloride (LiC1)in 200. g of water in a well-insulated open cup. He then observes the temperature of the water rise from 22.0 °C to 37.2 °C over the course of 5.2 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: LiCl (s) Lit (aq) + Cl(aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do the 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 AHxn per mole of LiCl. exothermic O endothermic Oneither kJ mol X

Chemistry: Principles and Practice
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter5: Thermochemistry
Section: Chapter Questions
Problem 5.63QE: A 0.470-g sample of magnesium reacts with 200 g dilute HCl in a coffee-cup calorimeter to form...
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Please do not round off calculations until final answer. Thank you.

A student dissolves 13.8 g of lithium chloride (LiC1)in 200. g of water in a well-insulated open cup. He then observes the temperature of the water rise from 22.0 °C to 37.2 °C over the course of 5.2 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: LiCl(s) → Li* (aq) + Cl¯ (aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do the 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 LiCl. rxn 0 exothermic endothermic neither kJ kJ mol x10 X Ś
Transcribed Image Text:A student dissolves 13.8 g of lithium chloride (LiC1)in 200. g of water in a well-insulated open cup. He then observes the temperature of the water rise from 22.0 °C to 37.2 °C over the course of 5.2 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: LiCl(s) → Li* (aq) + Cl¯ (aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do the 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 LiCl. rxn 0 exothermic endothermic neither kJ kJ mol x10 X Ś
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