Please **Model 4**Calorimetry involves the measurement of heat flow from one object (often the system) to another (often the surroundings). The instrument chemists use to measure changes in heat energy is called a calorimeter. The calorimeter is composed of an insulated container (like a Styrofoam cup) containing a measured mass of water. A thermometer rests in the water. A reaction vessel is also placed inside the water – this is where the reaction actually occurs. The reaction vessel is surrounded by the measured mass of water. We will assume that the calorimeter is a closed system where all the energy released by one object is absorbed by the other and vice versa.**Diagram Explanation:**The diagram depicts a calorimeter setup:- **Thermometer**: Positioned vertically to measure the temperature of the water.- **Reaction Vessel**: Placed inside the water within the calorimeter.- **Calorimeter**: An insulated container holding the system.- **Heat Flow Arrows**: Indicate heat lost by the reaction vessel and heat gained by the water.**Questions:**1. **What does the word "closed system" indicate about the calorimeter?**2. **What is the term given to reactions that release energy?**3. **If energy is released by the reaction that is taking place, where will the heat be transferred to?**4. **What will happen to the temperature of the surrounding water in the calorimeter?**5. **What is the term given to reactions that absorb energy?**

A closed system in thermodynamics means a system from which exchange of energy or heat takes place…

What does the word "closed system" indicate about the calorimeter? What is the term given to reactions that release energy? If energy is released by the reaction that is taking place, where will the heat be transferred to? What will happen to the temperature of the surrounding water in the calorimeter?

What does the word "closed system" indicate about the calorimeter? What is the term given to reactions that release energy? If energy is released by the reaction that is taking place, where will the heat be transferred to? What will happen to the temperature of the surrounding water in the calorimeter?

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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Concept explainers

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

Please

**Model 4**

Calorimetry involves the measurement of heat flow from one object (often the system) to another (often the surroundings). The instrument chemists use to measure changes in heat energy is called a calorimeter. The calorimeter is composed of an insulated container (like a Styrofoam cup) containing a measured mass of water. A thermometer rests in the water. A reaction vessel is also placed inside the water – this is where the reaction actually occurs. The reaction vessel is surrounded by the measured mass of water. We will assume that the calorimeter is a closed system where all the energy released by one object is absorbed by the other and vice versa.

**Diagram Explanation:**
The diagram depicts a calorimeter setup:
- **Thermometer**: Positioned vertically to measure the temperature of the water.
- **Reaction Vessel**: Placed inside the water within the calorimeter.
- **Calorimeter**: An insulated container holding the system.
- **Heat Flow Arrows**: Indicate heat lost by the reaction vessel and heat gained by the water.

**Questions:**

1. **What does the word "closed system" indicate about the calorimeter?**

2. **What is the term given to reactions that release energy?**

3. **If energy is released by the reaction that is taking place, where will the heat be transferred to?**

4. **What will happen to the temperature of the surrounding water in the calorimeter?**

5. **What is the term given to reactions that absorb energy?**

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