Final answer:
Dilute acids such as lactic acid and acetic acid can change the fibrous structure of chrysotile asbestos. The new structure formed after reacting with the acid is hydrated magnesium silicate, also known as serpentine.
Step-by-step explanation:
The fibrous structure of chrysotile asbestos can be changed by dilute acids such as lactic acid and acetic acid. When chrysotile asbestos reacts with these acids, it undergoes a chemical reaction and forms a new structure. The exact structure will depend on the specific acid and reaction conditions, but one possible result is the formation of hydrated magnesium silicate, also known as serpentine. This new structure is different from the original fibrous structure of chrysotile asbestos.