Question

b) A long glass tube is set up as shown. cotton wool soaked in concentrated hydrochloric acid long glass tube damp blue itmus paper At first, the blue litmus paper does not turn red After a short time, the litmus paper turns red. Explain these observations using the kinetic particle model​

Answer 1

The blue litmus paper initially does not turn red when placed in the glass tube with concentrated hydrochloric acid. However, after some time, the litmus paper turns red. This can be explained by the kinetic particle model of matter.

Step-by-step explanation:

The observations described can be explained using the kinetic particle model of matter. At first, when the blue litmus paper is placed in the glass tube, it does not turn red. This is because the concentrated hydrochloric acid is in the liquid state, and the acid particles are not in contact with the litmus paper. However, over time, the acid vaporizes and the acid particles come into contact with the litmus paper. The acid particles react with the water in the litmus paper, releasing hydrogen ions (H+), which turn the litmus paper red.