2. When 4.98 g of NaOH was dissolved in 49.72 g of water in a calorimeter at 23.7°C, the temperature of the solution went up to 50.1°C. Is this dissolution reaction exothermic? a. Why? b. Calculate 9H,0, using Equation 1. joules с. Find AH for the reaction as it occurred in the calorimeter (Eq. 5). ΔΗ- joules
2. When 4.98 g of NaOH was dissolved in 49.72 g of water in a calorimeter at 23.7°C, the temperature of the solution went up to 50.1°C. Is this dissolution reaction exothermic? a. Why? b. Calculate 9H,0, using Equation 1. joules с. Find AH for the reaction as it occurred in the calorimeter (Eq. 5). ΔΗ- joules
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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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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Question
Heat Effects and Calorimetry
![2. When 4.98 g of NaOH was dissolved in 49.72 g of water in a calorimeter at 23.7°C, the temperature of the
solution went up to 50.1°C.
Is this dissolution reaction exothermic?
a.
Why?
b. Calculate qH,O, using Equation 1.
joules
с.
Find AH for the reaction as it occurred in the calorimeter (Eq. 5).
ΔΗ-
joules](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd62a91b5-60c5-4a97-9022-e43a55d1b398%2Fa369f7e7-cfef-4b73-bd0c-0455ca0f64ec%2Fl47epcw_processed.jpeg&w=3840&q=75)
Transcribed Image Text:2. When 4.98 g of NaOH was dissolved in 49.72 g of water in a calorimeter at 23.7°C, the temperature of the
solution went up to 50.1°C.
Is this dissolution reaction exothermic?
a.
Why?
b. Calculate qH,O, using Equation 1.
joules
с.
Find AH for the reaction as it occurred in the calorimeter (Eq. 5).
ΔΗ-
joules
![d. Find AH for the dissolution of 1.00 g NaOH in water.
AH =
kJ/g
e.
Find AH for the dissolution of 1 mole NAOH in water.
AH =
kJ/mol
f.
Given that NaOH exists as Na and OH¯ ions in solution, write the equation for the reaction that
occurs when NaOH is dissolved in water.
Given the following heats of formation, AH, in kJ per mole, as obtained from a table of AH, data,
calculate AH for the reaction in Part (f). Compare your answer with the result you obtained in Part (e).
NaOH(s), –425.6; Na*(aq), –240.1; OH (aq), –230.0
g.
ΔΗ
kJ/mol](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd62a91b5-60c5-4a97-9022-e43a55d1b398%2Fa369f7e7-cfef-4b73-bd0c-0455ca0f64ec%2F2gj1f8_processed.jpeg&w=3840&q=75)
Transcribed Image Text:d. Find AH for the dissolution of 1.00 g NaOH in water.
AH =
kJ/g
e.
Find AH for the dissolution of 1 mole NAOH in water.
AH =
kJ/mol
f.
Given that NaOH exists as Na and OH¯ ions in solution, write the equation for the reaction that
occurs when NaOH is dissolved in water.
Given the following heats of formation, AH, in kJ per mole, as obtained from a table of AH, data,
calculate AH for the reaction in Part (f). Compare your answer with the result you obtained in Part (e).
NaOH(s), –425.6; Na*(aq), –240.1; OH (aq), –230.0
g.
ΔΗ
kJ/mol
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