Explain the use of china rose petals as indicators.

It is used to indicate if a substance is acidic or basic in nature. China rose petals when soaked in warm water for few hours gives red coloured juice . thic juice may be used as an indicator. this juice turns magenta in acidic medium and green in basic medium. 

                                                              Hope it helps .


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Hello my friend,china rose petals are used as INDICATOR
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China rose becomes a natural indicator when it is soaked in water.
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Alcohols, like water, can show either acidic or basic properties at the -OH group. With a pKa of around 16-19, they are, in general, slightly weaker acids than water, but they are still able to react with strong bases such as sodium hydride or reactive metals such as sodium.
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China rose(hibiscus) is the petal part of a plant that is often used as indicator which shows differents colours in acids and bases and the colour determines whether it is an acid or a base. Once you strain out the plant part and if you test a substance and if it's an acid, then the solution of hibiscus would turn magenta and in contact with base, it would turn green and this is how it acts as one of the major indicators that are used in daily life.
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