**Problem 5: Heat Calculation for Phase Transition**Determine the heat required in kilojoules (kJ) to convert 10.1 grams of an unknown liquid to a gas. The initial temperature of the liquid is 19.2°C, and it is heated to a gas at 93.5°C. The molar mass (MM) of the unknown liquid is 83.21 g/mol. Additional data are as follows:- Specific heat capacity of the liquid, \( s(l) \): 1.58 J/(g·°C)- Specific heat capacity of the gas, \( s(g) \): 0.932 J/(g·°C)- Boiling point, \( T_b \): 57.3°C- Enthalpy of vaporization, \( \Delta H_{\text{vap}} \): 22.5 kJ/molUse this information to compute the total energy required for the phase transition from liquid at 19.2°C to gas at 93.5°C.

We have to given three times heat. first we have to raise the temperature from 19.2°C to 57.3°C…

Answered: unknown liquid (MM = 83.21 g/mol) at…

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unknown liquid (MM = 83.21 g/mol) at 19.2 °C to a gas at s (g) 0.932 J/(g-°C) 93.5 °C? T. 57.3 °C AH 22.5 kH/mol

Chemistry

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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

**Problem 5: Heat Calculation for Phase Transition**

Determine the heat required in kilojoules (kJ) to convert 10.1 grams of an unknown liquid to a gas. The initial temperature of the liquid is 19.2°C, and it is heated to a gas at 93.5°C. The molar mass (MM) of the unknown liquid is 83.21 g/mol. Additional data are as follows:

- Specific heat capacity of the liquid, \( s(l) \): 1.58 J/(g·°C)
- Specific heat capacity of the gas, \( s(g) \): 0.932 J/(g·°C)
- Boiling point, \( T_b \): 57.3°C
- Enthalpy of vaporization, \( \Delta H_{\text{vap}} \): 22.5 kJ/mol

Use this information to compute the total energy required for the phase transition from liquid at 19.2°C to gas at 93.5°C.

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