**Title: Heat Exchange in Phase Transition of Water****Objective:** Calculate the heat, in kJ, exchanged in the conversion of 20.0 grams of steam at 104 °C to water at 10.5 °C.**Data:**- **Specific Heat Capacities:** - Solid Water (H₂O(s)): 2.087 \( \frac{J}{g\cdot°C} \) - Liquid Water (H₂O(l)): 4.184 \( \frac{J}{g\cdot°C} \) - Gaseous Water (H₂O(g)): 2.042 \( \frac{J}{g\cdot°C} \)- **Enthalpy Changes:** - Enthalpy of fusion, \( \Delta H_{fus} \): 6.01 kJ/mol - Enthalpy of vaporization, \( \Delta H_{vap} \): 40.7 kJ/mol**Calculation Steps:**1. **Condensation:** Calculate the energy released when steam condenses to liquid water at 104 °C.2. **Cooling Process:** Calculate the energy released as the water cools from 104 °C to 10.5 °C.**Instructions:**Applying the heat exchange formulas relevant to phase changes and specific heats for different states of matter will yield the total heat exchanged in this conversion process. Use the given specific heat capacities and enthalpy values to compute precise energy exchanges in each step. **Note:** Ensure to use correct unit conversions, particularly from joules to kilojoules where necessary, and consider the molar mass of water (18.015 g/mol) for calculating energy per mole if needed.

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Calculate the heat, in kJ, exchanged in the conversion of 20.0 g of steam at 104 °C to water at 10.5 °C. J Specific heat capacity, H2O(s) = 2.087 g.ºC %3D J Specific heat capacity, H20(1) = 4.184 g.ºC J Specific heat capacity, H20(g) = 2.042 9•°C ΔΗ; fus = 6.01 kJ/mol AH vap 40.7 kJ/mol

Calculate the heat, in kJ, exchanged in the conversion of 20.0 g of steam at 104 °C to water at 10.5 °C. J Specific heat capacity, H2O(s) = 2.087 g.ºC %3D J Specific heat capacity, H20(1) = 4.184 g.ºC J Specific heat capacity, H20(g) = 2.042 9•°C ΔΗ; fus = 6.01 kJ/mol AH vap 40.7 kJ/mol

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

**Title: Heat Exchange in Phase Transition of Water**

**Objective:**
Calculate the heat, in kJ, exchanged in the conversion of 20.0 grams of steam at 104 °C to water at 10.5 °C.

**Data:**

- **Specific Heat Capacities:**
- Solid Water (H₂O(s)): 2.087 \( \frac{J}{g\cdot°C} \)
- Liquid Water (H₂O(l)): 4.184 \( \frac{J}{g\cdot°C} \)
- Gaseous Water (H₂O(g)): 2.042 \( \frac{J}{g\cdot°C} \)

- **Enthalpy Changes:**
- Enthalpy of fusion, \( \Delta H_{fus} \): 6.01 kJ/mol
- Enthalpy of vaporization, \( \Delta H_{vap} \): 40.7 kJ/mol

**Calculation Steps:**

1. **Condensation:** Calculate the energy released when steam condenses to liquid water at 104 °C.
2. **Cooling Process:** Calculate the energy released as the water cools from 104 °C to 10.5 °C.

**Instructions:**

Applying the heat exchange formulas relevant to phase changes and specific heats for different states of matter will yield the total heat exchanged in this conversion process. Use the given specific heat capacities and enthalpy values to compute precise energy exchanges in each step.

**Note:**
Ensure to use correct unit conversions, particularly from joules to kilojoules where necessary, and consider the molar mass of water (18.015 g/mol) for calculating energy per mole if needed.

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