What is litmus on the pH scale?
What is litmus on the pH scale? In general, litmus paper is red below a pH of 4.5 and blue above a pH of 8.3. If the paper turns purple, this indicates the pH is near neutral. Red paper that does not change color indicates the sample is an acid. Is a litmus test a pH test? pH Test Papers Litmus paper is probably the most familiar pH paper. It is used to broadly test whether a solution is acidic or basic and comes in 3 types—red, blue, and neutral. What is positive litmus test? a coloring material (obtained from...