The standard Gibbs free energy of formation of a compound is the change of Gibbs free energy that accompanies the formation of 1 mole of that substance from its component elements, at their standard states (the most stable form of the element at 25 degrees Celsius and 100 kilopascals).
Assuming you mean How much of the water on Earth is fresh water, about 5% of the water on the Earth is fresh water, as opposed to about 95% salt water. To anser your questioâ¦n directly though, 100% of the fresh water we know about is on Earth.
The Earthâs surface is 70% water. Of that 70% only 2.5% is drinkable, fresh water. Nearly 70% of that drinkable water is frozen in the icecaps of Antarctica and Greenland. The other 29% is locked in deep underground aquifers not accessible to humans. That leaves us with less than 1% of accessible fresh water on Earth. These sources come in the form of lakes, rivers, and precipitation run off. That means of all of the water Earth has, both fresh and salt water, only 0.007% is accessible for humans to drink. I thought that it would be an interesting idea for this issue to go over the largest sources of fresh water on the globe for our top ten list.