Question

What happens when moist blue and red litmus papers are lowered into a jar containing pure oxygen? What does it show?

Answer 1

Action of litmus

• We can observe the nature of a solution using litmus paper which is an indicator.
• Blue litmus changes to red in acidic solution and red litmus changes to blue in alkaline solution.
• There is no change in the colour of litmus paper in neutral solution.
• When moist blue and red litmus papers are lowered into a jar containing pure oxygen, then no change in colour of both the litmus papers is observed.
• This shows that oxygen is neutral.