Calculate the heat change in joules required to convert 500.0 g of steam to water at 100.0 degree Celsius and indicate whether heat was absorbed or released? The heat vaporization water is 2260J/g.
1 Answer
Feb 13, 2018
Explanation:
energy change needed = mass of water * specific latent heat of vaporisation
specific: energy needed to heat
vaporisation: from a liquid to a gas
latent: without changing the temperature
specific latent heat of vaporisation of water:
the heat change in joules is
this energy is released.
in a liquid, there are more bonds between molecules. in a gas, there are much fewer.
making bonds releases energy, while breaking bonds absorbs it.
bonds are made when changing state from gas to liquid, so when steam changes to water, energy is released as bonds are made.