4. Carbon tetrachloride, CCl4, was once used as a dry cleaning solvent, but is no longer used because it is carcinogenic. At 59.2°C, the vapor pressure of CCl4 is 58.9 kPa, and its enthalpy of vaporization is 29.82 kJ/mol. Use this information to estimate the normal boiling point (in °C) for CCl4. °C5. How much heat (in kJ) is required to convert 423 g of liquid H2O at 24.8°C into steam at 147°C? (Assume that the specific heat of liquid water is 4.184 J/g·°C, the specific heat of steam is 2.078 J/g·°C, and that both values are constant over the given temperature ranges. The normal boiling point of H2O is 100.0°C.) kJ6.From the phase diagram for water (figure below), determine the state of water at the following.(a)34°C and 83 kPasolidliquid gas(b)0.01°C and 0.2 kPasolidliquid gas(c)−10°C and 24 kPasolidliquid gas(d)195°C and 96 kPasolidliquid gas(e)42°C and 117 kPasolidliquid gas(f)85°C and 10 kPasolidliquid gas6. dentify the type of crystalline solid (metallic, covalent network, ionic, or molecular) formed by each of the following substances.(a)Aumetalliccovalent network ionicmolecular(b)Bmetalliccovalent network ionicmolecular(c)NH4Clmetalliccovalent network ionicmolecular(d)S8metalliccovalent network ionicmolecular(e)CCl4metalliccovalent network ionicmolecular(f) Na3PO4metalliccovalent network ionicmolecular(g)C6H6metalliccovalent network ionicmolecular(h)MgSO4metalliccovalent network ionicmolecular(i)C (diamond)metalliccovalent network ionicmolecular8. Classify each substance in the table as either a metallic, covalent network, ionic, or molecular solid.SubstanceAppearanceMelting PointElectrical ConductivitySolubility in WaterXshiny, malleable1907°ChighinsolubleYbrittle, white734°Conly if melted/dissolvedsolubleZhard (not brittle), colorless1722°CnoneinsolubleSubstance Xmetalliccovalent network ionicmolecularSubstance Ymetalliccovalent network ionicmolecularSubstance Zmetalliccovalent network ionicmolecular

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Answered: How much heat (in kJ) is required to…

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter5: Thermochemistry

Section: Chapter Questions

Problem 5.102QE

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Question

4. Carbon tetrachloride, CCl₄, was once used as a dry cleaning solvent, but is no longer used because it is carcinogenic. At 59.2°C, the vapor pressure of CCl₄ is 58.9 kPa, and its enthalpy of vaporization is 29.82 kJ/mol. Use this information to estimate the normal boiling point (in °C) for CCl₄.

°C

5. How much heat (in kJ) is required to convert 423 g of liquid H₂O at 24.8°C into steam at 147°C? (Assume that the specific heat of liquid water is 4.184 J/g·°C, the specific heat of steam is 2.078 J/g·°C, and that both values are constant over the given temperature ranges. The normal boiling point of H₂O is 100.0°C.)

From the phase diagram for water (figure below), determine the state of water at the following.

(a)

34°C and 83 kPa

solidliquid gas

(b)

0.01°C and 0.2 kPa

solidliquid gas

(c)

−10°C and 24 kPa

solidliquid gas

(d)

195°C and 96 kPa

solidliquid gas

(e)

42°C and 117 kPa

solidliquid gas

(f)

85°C and 10 kPa

solidliquid gas

6. dentify the type of crystalline solid (metallic, covalent network, ionic, or molecular) formed by each of the following substances.

(a)