what is the colour of bromothymol when added to an acid solution
Bromothymol blue The protonated form of bromothymol blue has its peak absorption at 427 nm thus transmitting yellow light in acidic solutions, and the deprotonated form has its peak absorption at 602 nm thus transmitting blue light in more basic solutions.[3] Highly acidic Bromothymol blue is magenta in color.
Friedel–Crafts reaction Reaction of chloroform with aromatic compounds using an aluminium chloride catalyst gives triarylmethanes, which are often brightly colored, as is the case in triarylmethane dyes. This is a bench test for aromatic compounds.[38]
Small intestine Food from the stomach is allowed into the duodenum through the pylorus by a muscle called the pyloric sphincter.
Ethyl methanesulfonate EMS is often used in genetics as a mutagen. Mutations induced by EMS can then be studied in genetic screens or other assays.