Describe, with the aid of a diagram an experiment to determine specific heat of vaporization of steam using the method of mixtures.

Describe, with the aid of a diagram an experiment to determine specific heat of vaporization of steam using the method of mixtures.

• The initial temperature θ₀ and mass, m of water in the calorimeter are measured
• Steam from boiling water is passed into water in a calorimeter and after a reasonable temperature rise, flow of steam is stopped and final temperature, θ_f is recorded.
• Mass m₂ of water in the calorimeter is then taken
• The mass of steam condensed, m_s = (m₂– m)

Given that the heat capacity of the calorimeter= C

Heat gained by steam = heat gained by water and calorimeter

m_sc_v + m_sc(100- θ_f) = (m₂ – m)c(θ_f – θ₀) + C(θ_f – θ₀)

c_v = specific latent heat of vaporization

c= specific heat capacity of water

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