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In an experiment to determine the specific latent heat of vaporization of water, steam of mass 20g at 100°C is passed into 200g of water...

      

In an experiment to determine the specific latent heat of vaporization of water, steam of mass 20g at 100⁰C is passed into 200g of water initially at 40⁰C in a container of negligible heat capacity. The temperature of the water rises to 80⁰C. (take the specific capacity of water 4200J/kg/k and the boiling water as 100⁰C)
i. Determine the specific latent heat of vaporization of water.
ii. What are the two errors in this experiment?

  

Answers


joseph
i. Heat lost by steam = heat gained by water
(20/1000)xLv +(20/1000)x4200x(100-80)=(200/1000)x4200x(80-40)
Lv =1596000J/kg
ii. Heat lost to the environment
Heat absorbed by the containers

joseph rimiru answered the question on November 2, 2017 at 19:13


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