Question

what mean by blue litmus and red litmus​

Answer 1

Answer:

The main use of litmus is to test whether a solution is acidic or basic. Light Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F). Neutral litmus paper is purple.

Answer 2

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what mean by blue litmus and red litmus?

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${\bold\blue{Blue \: Litmus}}$

Blue Litmus turns into red colour in acidic medium.

${\bold\red{Red \: Litmus}}$

Red litmus turns into blue colour in basic medium.

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${\bold\green{ADDITIONAL \: INFORMATION}}$

What is Litmus?

✦Litmus substances are used to test the acidic or basic nature of a substance.

✦They is extracted from lichens.

✦They are the most commonly used natural indicator.

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What are indicators?

✦ Substances which are used to test whether a substance is acidic or basic in nature. Those substances are known as indicators.

✦Some natural occurring indicators are:-

turmeric, Litmus, China rose petal etc.

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What are acids and bases ?

✦ Acids are sour in taste.

The chemical nature of such substances is acidic.

✦ Bases are bitter in taste and soapy to touch.

The nature of such substances is said to be basic.

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