Question

8) What are chemical indicators and explain their color change in acidic or basic medium?​

Answer 1

Answer:

pH Ranges of pH Indicators

pH indicators are specific to the range of pH values one wishes to observe. For example, common indicators such as phenolphthalein, methyl red, and bromothymol blue are used to indicate pH ranges of about 8 to 10, 4.5 to 6, and 6 to 7.5 accordingly

Answer 2

Indicators are substances that change colour when they are added to acidic or alkaline solutions. Litmus, phenolphthalein, and methyl orange are all indicators that are commonly used in the laboratory. Litmus indicator solution turns red in acidic solutions, blue in alkaline solutions, and purple in neutral solutions.