If a substance changes the color of a blue litmus paper to red, it is acidic blue to red
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Litmus paper is basically used to test nature of solution i.e acid or alkaline. For acid blue litmus turns to red. But for alkaline red litmus turns to blue color.
An acid turns blue litmus paper red. This is because the acid donates a proton (H+) to the water in the litmus paper, changing the pH and causing the litmus paper to change color.
No, ethanoic acid does not change the color of blue litmus paper. Blue litmus paper remains blue when in contact with ethanoic acid, as it is a weak acid and does not provide a strong enough acidic environment to turn the blue litmus paper red.
When a blue litmus paper is dipped in an acid, the paper will turn red. This color change indicates that the solution is acidic.
Acid can't turn red litmus paperbur base canturn it blue .