Hydrogen and Water Flashcards
1
Q
describe the combustion of hydrogen
A
The combustion of hydrogen is its reaction with oxygen. Water is created. and a lot of energy. 4H + O2 > H2O
2
Q
describe the use of anhydrous copper(II) sulfate in the chemical test for water
A
anhydrous copper sulphate will become hydrous copper sulphate when it is reacted with water. So if anhydrous copper sulphate goes from white to blue in the presence of a liquid it will be water.
3
Q
describe a physical test to show whether water is pure.
A
If water is pure it will boil at exactly 100° and freeze at exactly 0°
