Measuring specific latent heat of vaporization of water
Instruction: Press <Start> to heat the water. When water boils, press <Take initial readings>. Wait for about 10 g of water to boil away and press <Take final readings>. Press <Show calculation> to see how the specific latent heat of vaporization of water is obtained.
Start Reset
Take initial readings Take final readings
0079999J
500.0g


Heating paused due to low water level.
Calculation
Mass of water boiled off m
= m1 – m2
= – = g = kg
Energy supplied E
= j2 – j1
= – = J
Specific latent heat of vaporization of water lv
= __ = ____________ = x 106 J kg–1
E
m
Demo Clear