Question

during production of HCL acid what colour changes observed when dry and moist Litmus Paper is dipped in HCL​

Answer 1

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• HCl is Hydrochloric Acid, so blue litmus will turn red.

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$\textbf{\huge{\red{More}} }$

=> The moisture is needed to allow the acid and the litmus dye molecule to come into contact so that the chemical reaction which changes the color can occur.

=> HCL in contact with red litmus paper would produce no color change.

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