what do you observe when a dry litmus paper is dipped in concentrated sulphuric acid? justify your answer
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When a blue litmus paper is dipped in dilute HCl acid, its color changes to red. Blue litmus turns red when it is dipped in acid. Explanation: Concentrated sulfuric acid has a very strong affinity for water, forming various hydrates, such as H2SO4∙4H2O .
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