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Litmus? (1 Viewer)

Coookies

Coookies

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What does it mean when it says turns red litmus blue or blue litmus red?
 
qianjixin

qianjixin

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Blue litmus turns red in acid but stays blue in an alkaline
Red litmus turns blue in alkaline and stays red in acids
 
nightweaver066

nightweaver066

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Just for extra information, pH range of litmus is from 4.5 to 8.3 and changes from red to blue.
 
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