II. A chemistry student stowed away on the USS Coca Cola bound for Colón, Panama (Panama per capita is noW the third largest consumer of Coca Cola beverages worldwide). Aboard the ship, she decided to do an experiment to determine the calorimeter constant (not much to do at sea) using a procedure identical to the one detailed in our methodology. The only difference was that she did not have access to distilled water so, being at sea, she used ocean water which her handy CRC Handbook* reported has a density of 1.025 g/mL and specific heat (Cp) equal to 3.85 J/ °C. The temperatures below were determined graphically, extrapolated to the time of mixing. Cold Ocean Water 50.00 mL 17.7°C Warm Ocean Water 50.00 mL 38.8 °C Combined Ocean Sample 100.0 mL 26.8 °C
II. A chemistry student stowed away on the USS Coca Cola bound for Colón, Panama (Panama per capita is noW the third largest consumer of Coca Cola beverages worldwide). Aboard the ship, she decided to do an experiment to determine the calorimeter constant (not much to do at sea) using a procedure identical to the one detailed in our methodology. The only difference was that she did not have access to distilled water so, being at sea, she used ocean water which her handy CRC Handbook* reported has a density of 1.025 g/mL and specific heat (Cp) equal to 3.85 J/ °C. The temperatures below were determined graphically, extrapolated to the time of mixing. Cold Ocean Water 50.00 mL 17.7°C Warm Ocean Water 50.00 mL 38.8 °C Combined Ocean Sample 100.0 mL 26.8 °C
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter9: Energy And Chemistry
Section: Chapter Questions
Problem 9.101PAE
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Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Question
100%
Calculate the calorimeter constant for her calorimeter by following the steps below.
1. Calculate the mass of the warm water.
2. Calculate the change in temperature of the warm water.
3. Calculate the heat lost by the warm water.
4. Calculate the mass of the cold ocean water.
5. Calculate the change in temperature of the cold water.
6. Calculate the heat gained by the cold water.
7. Calculate the heat lost to the surroundings.
8. Calculate the calorimeter constant.
Transcribed Image Text:II. A chemistry student stowed away on the USS Coca Cola bound for Colón, Panama (Panama per capita is noW
the third largest consumer of Coca Cola beverages worldwide). Aboard the ship, she decided to do an experiment to
determine the calorimeter constant (not much to do at sea) using a procedure identical to the one detailed in our
methodology. The only difference was that she did not have access to distilled water so, being at sea, she used
ocean water which her handy CRC Handbook* reported has a density of 1.025 g/mL and specific heat (Cp) equal to
3.85 J/ °C. The temperatures below were determined graphically, extrapolated to the time of mixing.
Cold Ocean Water
50.00 mL
Warm Ocean Water
50.00 mL
38.8 °C
Combined Ocean Sample
100.0 mL
17.7°C
26.8 °C
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