Get premium membership and access revision papers with marking schemes, video lessons and live classes.
In an experiment to determine the specific latent heat of vaporization of water, steam of mass 10 g at #100^oC# is passed into 100 g of Water initially at #20^oC# in a container of negligible heat capacity. The temperature of the Water rises to #70^oC#. (Take the specific heat capacity of water as #4.2 x 10^3# J/kg/K and the boiling point of water as #100^oC#)
(i) Determine the specific latent heat of vaporization of water. (4 marks)
(ii) State two sources of error in this experiment. (2 mark)
(KCSE 2014 paper 1 question 17c)