Answer the following:
Sonia performs the following experiment:
- She takes soap solution in a test tube and adds red litmus solution. The solution turns blue.
- Then she slowly adds vinegar. After some time, the blue solution turns red again.
Litmus test
1. Why did the red litmus solution turn blue when added to soap solution?
2. What type of reaction is taking place when vinegar is added to soap solution solution?
3. What will happen if excess vinegar is added after neutralisation?