2LiCl(s)+H2O (l)-> 2HCl +Li2O(aq) 1.28 g of LiCl(s) is dissolved in 25.0 mL of water that is initially 22.0°C. a) calculate the molar enthalpy (in kJ/mol) of dissolving LiCl(s) in water. Report the value of the answer with the correct sign and correct sig figs. b)True or False, this process is exothermic c)Calculate the amount of heat absorbed/released (in kJ) when 1.28 g of LiCl(s) dissolves. Report the value of the answer with the correct sign and correct sig figs. d) Calculate the final temperature of the solution (in °C). You can assume the heat capacity of solution is equal to the heat capacity of water. Report the value of the answer with correct sig figs. (dwater = 1g/mL; Cp(water) = 4.184 J/g°C)
2LiCl(s)+H2O (l)-> 2HCl +Li2O(aq) 1.28 g of LiCl(s) is dissolved in 25.0 mL of water that is initially 22.0°C. a) calculate the molar enthalpy (in kJ/mol) of dissolving LiCl(s) in water. Report the value of the answer with the correct sign and correct sig figs. b)True or False, this process is exothermic c)Calculate the amount of heat absorbed/released (in kJ) when 1.28 g of LiCl(s) dissolves. Report the value of the answer with the correct sign and correct sig figs. d) Calculate the final temperature of the solution (in °C). You can assume the heat capacity of solution is equal to the heat capacity of water. Report the value of the answer with correct sig figs. (dwater = 1g/mL; Cp(water) = 4.184 J/g°C)
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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2LiCl(s)+H2O (l)-> 2HCl +Li2O(aq)
1.28 g of LiCl(s) is dissolved in 25.0 mL of water that is initially 22.0°C.
a) calculate the molar enthalpy (in kJ/mol) of dissolving LiCl(s) in water. Report the value of the answer with the correct sign and correct sig figs.
b)True or False, this process is exothermic
c)Calculate the amount of heat absorbed/released (in kJ) when 1.28 g of LiCl(s) dissolves. Report the value of the answer with the correct sign and correct sig figs.
d) Calculate the final temperature of the solution (in °C). You can assume the heat capacity of solution is equal to the heat capacity of water. Report the value of the answer with correct sig figs.
(dwater = 1g/mL; Cp(water) = 4.184 J/g°C)
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