Hydrogen and Water

Question 1

describe the combustion of hydrogen

Answer 1

The combustion of hydrogen is its reaction with oxygen. Water is created. and a lot of energy. 4H + O₂ > H₂O

Question 2

describe the use of anhydrous copper(II) sulfate in the chemical test for water

Answer 2

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.

Question 3

describe a physical test to show whether water is pure.

Answer 3

If water is pure it will boil at exactly 100° and freeze at exactly 0°