### How much energy (kJ) is needed to heat 25.0 g of isopropyl alcohol from -25.0°C to +90.0°C?**Table of Relevant Properties:**| Property | Value ||--------------------------------------------|-----------------------|| Molar mass | 60.1 g/mol || Boiling point | 82.5 °C || Melting point | -89.0 °C || Heat of vaporization, ΔHvap | 39.85 kJ/mol || Specific heat capacity, liquid | 1.71 J/(g·K) || Specific heat capacity, gas | 2.49 J/(g·K) |**Calculation Steps:**1. **Determine the temperature change required:** - Initial temperature: -25.0°C - Final temperature: 90.0°C2. **Determine the phase of isopropyl alcohol at given temperatures:** - Melting point: -89.0 °C - Boiling point: 82.5 °C 3. **Calculate the energy needed for each phase and phase change:** 1. *Heating from -25.0°C to 82.5°C (liquid phase):* - q1 = m * cliquid * ΔT - Where: - m = 25.0 g - cliquid = 1.71 J/g·K - ΔT = 82.5°C - (-25°C) 2. *Phase transition from liquid to gas at boiling point:* - q2 = n * ΔHvap - Where: - n = m / Molar mass - m = 25.0 g - Molar mass = 60.1 g/mol - ΔHvap = 39.85 kJ/mol 3. *Heating from 82.5°C to 90.0°C (gas phase):* - q3 = m * cgas

we have to calculate the energy needed to heat isopropyl alcohol

How much energy (kJ) is needed to heat 25.0 g of isopropyl alcohol from -25.0°C to +90.0°C? Molar mass 60.1 g/mol Boiling point 82.5 °C Melting point -89.0 °C kJ Heat of vaporization, AHvap 39.85 kJ/mol Round your final answer to 2 Specific heat capacity, liquid 1.71 J/(g.K) significant digits. Specific heat capacity, gas 2.49 J/(g.K)

How much energy (kJ) is needed to heat 25.0 g of isopropyl alcohol from -25.0°C to +90.0°C? Molar mass 60.1 g/mol Boiling point 82.5 °C Melting point -89.0 °C kJ Heat of vaporization, AHvap 39.85 kJ/mol Round your final answer to 2 Specific heat capacity, liquid 1.71 J/(g.K) significant digits. Specific heat capacity, gas 2.49 J/(g.K)

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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