Reena organized a birthday party in her home. in her party 3-4 friends of her also came. while having food, some food fell on the dress of her friend meena. when she went home and applied detergent on her dress the color of dress changed to red, why?
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The color changed to red because turmeric powder present in food acts as an indicator with the detergent which is basic in nature and changes its color.
- Food contains turmeric powder as an essential spice which can also be used as an indicator.
- Turmeric powder is a natural indicator.
- It is originally yellow in color.
- When it reacts with acid or neutral natured substances, it does not change its color.
- On reacting with a basic natured substance, it undergoes neutralization reaction and changes the color to red indicating the basic nature.
- Detergent powder is strongly basic in nature.
- It reacts with turmeric powder on washing which changes its color to red.
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