A 21.3 mL sample of 0.997 M NAOH solution is mixed with 29.5 mL of highly concentrated HCI in a coffee-cup calorimeter. The reaction that occurs is: NAOH(aq) + HCI(aq) → NaCl(aq) + H2O(1), AH =-55.8 kJ Both solutions started at 19.6 °C prior to mixing and reacting. What is the final temperature of the reaction mixture? Assumptions to make: 1. No heat is lost from the calorimeter. 2. The density of all solutions is 1.00 g/mL. 3. Volumes are additive. 4. The C, of the solution is the same as water 4.18 J-g1.°C 1. O 25.2 °C O 20.2 °C O 19.6 °C O 19.9 °C

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Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.109QP: A 21.3-mL sample of 0.977 M NaOH is mixed with 29.5 mL of 0.918 M HCl in a coffee-cup calorimeter...
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A 21.3 mL sample of 0.997 M NAOH solution is mixed with 29.5 mL of highly concentrated HCI in
a coffee-cup calorimeter. The reaction that occurs is:
NAOH(aq) + HCI(aq) → NaCl(aq) + H2O(1), AH =-55.8 kJ
Both solutions started at 19.6 °C prior to mixing and reacting. What is the final temperature of the
reaction mixture?
Assumptions to make: 1. No heat is lost from the calorimeter. 2. The density of all solutions is
1.00 g/mL. 3. Volumes are additive. 4. The C, of the solution is the same as water 4.18 J-g1.°C
1.
O 25.2 °C
O 20.2 °C
O 19.6 °C
O 19.9 °C
Transcribed Image Text:A 21.3 mL sample of 0.997 M NAOH solution is mixed with 29.5 mL of highly concentrated HCI in a coffee-cup calorimeter. The reaction that occurs is: NAOH(aq) + HCI(aq) → NaCl(aq) + H2O(1), AH =-55.8 kJ Both solutions started at 19.6 °C prior to mixing and reacting. What is the final temperature of the reaction mixture? Assumptions to make: 1. No heat is lost from the calorimeter. 2. The density of all solutions is 1.00 g/mL. 3. Volumes are additive. 4. The C, of the solution is the same as water 4.18 J-g1.°C 1. O 25.2 °C O 20.2 °C O 19.6 °C O 19.9 °C
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