Question

You are given three test tubes. The three test tubes contain distilled water, acidic solution, and the basic solution, respectively. There is only blue litmus paper available in order to identify what is in each test tube. How will you find out what is in each of the test tubes?

a) Dip litmus paper in each tube and observe color changes.
b) Taste a drop from each tube to identify.
c) Observe the pH values using a pH meter.
d) Mix the contents of all tubes to determine the properties.

Answer 1

The best way to identify what is in each test tube is to dip litmus paper in each tube and observe the color changes.

Step-by-step explanation:

The best way to identify what is in each of the test tubes is to dip litmus paper in each tube and observe the color changes. Litmus paper is treated with a dye that changes color in the presence of acids and bases. It turns red in acidic solutions and blue in basic solutions. By observing the color change of the litmus paper after dipping it in each tube, you can determine what is in each test tube.