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(b) Calculate the heat required to bring 300 kg of solid sodium from 0°C to a vapour at 1000°C at constant pressure of 1 atm. Latent heat of fusion of sodium at 97.7°C = 2.636 kJ mol$^{-1}$ Latent heat of vaporization of sodium at 914°C = 96.734 kJ mol$^{-1}$ Heat capacity of liquid sodium = 31.38 J mol$^{-1}$ K$^{-1}$ Heat capacity of sodium vapour = 20.79 J mol$^{-1}$ K$^{-1}$ Heat capacity of solid sodium = (20.96 + 0.0224T) J mol$^{-1}$ K$^{-1}$ where T is in K Molecular weight of sodium = 23 (15 marks)

          (b) Calculate the heat required to bring 300 kg of solid sodium from 0°C to a vapour at 1000°C at constant pressure of 1 atm.
Latent heat of fusion of sodium at 97.7°C = 2.636 kJ mol$^{-1}$
Latent heat of vaporization of sodium at 914°C = 96.734 kJ mol$^{-1}$
Heat capacity of liquid sodium = 31.38 J mol$^{-1}$ K$^{-1}$
Heat capacity of sodium vapour = 20.79 J mol$^{-1}$ K$^{-1}$
Heat capacity of solid sodium = (20.96 + 0.0224T) J mol$^{-1}$ K$^{-1}$ where T is in K
Molecular weight of sodium = 23
(15 marks)

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(b) Calculate the heat required to bring 300 kg of solid sodium from 0°C to a vapour at 1000°C at constant pressure of 1 atm.
Latent heat of fusion of sodium at 97.7°C = 2.636 kJ mol^-1
Latent heat of vaporization of sodium at 914°C = 96.734 kJ mol^-1
Heat capacity of liquid sodium = 31.38 J mol^-1 K^-1
Heat capacity of sodium vapour = 20.79 J mol^-1 K^-1
Heat capacity of solid sodium = (20.96 + 0.0224T) J mol^-1 K^-1 where T is in K
Molecular weight of sodium = 23
(15 marks)

Added by Taylor P.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

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Solved by Expert Joshua Klint

05/08/2023

Step 1

7°C to its melting point at 97.7°C. Given: - Heat capacity of solid sodium (Cp) = 20.96 + 0.0224T J mol-1 K-1 - Temperature change (ΔT) = melting point temperature - initial temperature = 97.7°C - 97.7°C = 0°C Using the given equation for heat capacity, we can Show more…

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Answer quickly for thumbs up(Answer is 16.89x10^5 KJ) pressure of 1 atm. Latent heat of fusion of sodium at 97.7C-2.636 kJ mol-1 Latent heat of vaporization of sodium at 914C=96.734 kJ mol-l Heat capacity of liquid sodium=31.38 J mol-1 K-1 Heat capacity of sodium vapour=20.79 J mol-1K-1 Heat capacity of solid sodium=20.96+0.0224TJ mol-1 K-1 where T is in K Molecular weight of sodium-23 (15marks)

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