E. Give reasons for the following.
1. Only few substances can be used as natural indicators.
2. Washing soda is an effective component of detergents not baking soda.
3. Calamine solution is applied on the skin when an ant bites.
4. Neutral solutions do not show any effect on litmus paper.
5. Turmeric stain on white shirt turns to red when it is washed with
soap.
Answers
Answer:
1 only pure substance are natural indicator because they are natural occurring
2 The sodium carbonate in washing soda "softens" water helping other cleaning ingredients lift soil from the fabrics and suspend the soil in the wash water. The washing soda binds to the minerals which make water hard, and allows the detergent to be absorbed into fibers properly to clean clothes.
3 calmine is a base and ant release formic acid when a base and acid react with each other they cancel their effect and foem water and salt
f a red litmus paper is dipped in a basic solution or alkaline solution, it turns blue and does not change in an acidic solution. ... -If the neutral litmus solution is exposed to acidic conditions it turns its colour from purple (or violet) to red and under alkaline or basic conditions it turns blue.
5 turmeric is natural indicator so when It reacts with base it turns red
Explanation:
if it is right