the colour of the yellow strip changes into red..
It is because the turmeric contains a compound called cucumine.cucumine reacts with the fatty acid in the soap/detergent and thence the color of the combination changes to red.
it turns red
baking soda reacts with vinegar to produce sodium acetate and carbon dioxide
You can substitute limewater with a solution of baking soda dissolved in water. This mixture will also produce carbon dioxide gas when it reacts with an acid.
Baking soda, or sodium bicarbonate, is a basic compound because it reacts with acids to form salt, water, and carbon dioxide gas. It has a pH greater than 7 and can help neutralize acids in a solution by accepting hydrogen ions.
baking soda.....:D
The chemical that reacts with vinegar is sodium bicarbonate.
When calcium chloride and water are combined, calcium chloride dissolves in the water to create a solution. When baking soda is added to the solution, it reacts with the calcium chloride to form calcium carbonate, water, and carbon dioxide gas.
The red color that appears when clothes stained with turmeric are washed with soap is due to a reaction between the alkaline pH of soap and the curcumin compound in turmeric. The curcumin changes its structure under alkaline conditions, resulting in a red color.
In turmeric indicator, the color of curd typically changes to a reddish-brown when turmeric is added. This is due to the pH-sensitive nature of curcumin, the active compound in turmeric, which reacts to the acidity or alkalinity of the curd. In acidic conditions, like in curd, the color shift is noticeable.
Sodium Bicarbonate
Baking soda is a base, with a pH of about 8.5. Water is neutral, being neither acid nor base. Adding baking soda to water simply dissolved the baking soda, making a base water/baking soda solution. Relatively speaking, water is actually slightly acid compared to baking soda, so potentially a very small reaction could occur during the dilution process, and if there were such a reaction, the result would be the release of carbon dioxide from the baking soda solution.