Question

The siThe simplest means of checking the pH of a solution is to dip red or blue litmus paper directly into the solution.mplest means of checking the pH of a solution is to dip red or blue litmus paper directly into the solution? A) true B) False

Answer 1

TRUE:

The easiest test to know if a solution is basic or acidic is to use litmus paper. Litmus papers contain a special dye to change color when is exposed to an acidic or basic solution. When the solution is ACIDIC the BLUE Litmus paper will turn into RED and if the solution is BASIC the RED Litmus paper will turn into BLUE.

But if you want to be slightly more accurate in measuring pH then you need to use HYDRION PAPER or pH paper. This is similar to Litmus paper, but this allow to check pH levels due to different color ranges present in the container strips.

And, to measure the pH in the laboratory, usually you have to put a drop of the solution onto de paper (unless your instructor says otherwise), since putting the paper in the solution may cause contamination of the solution.