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Why the colour become red when we put hydrocloric acid on termeric paper?
Turmeric paper contains curcumin, a natural pH indicator that changes color in response to acidity. When hydrochloric acid is applied, the acidic environment causes curcumin to undergo a chemical change, resulting in a red coloration. This color change indicates the presence of acid, demonstrating the pH-sensitive properties of turmeric.
Why would phenolpthalein not be a suitable indicator for the standardisation of hydrochloric acid with Borax?
Phenolphthalein is not suitable for titration involving Borax and hydrochloric acid because it changes color at a pH lower (usually around pH 8-9) than the equivalence point of this specific titration. Borax reacts as a weak base while hydrochloric acid is a strong acid, making the equivalence point acidic in nature. A suitable indicator would need to change color near this acidic pH of the equivalence point.
What is acid base indicator?
An acid base indicator is a chemical substance that has the ability to change color depending on the pH.
Why is the colour of the turmeric indicator yellow if the substance is acidic?
I'd suggest (but couldn't establish it from literature) that turmeric powder is yellowish ocra in acidic 'solution', because it gives mustard (made with acetic acid) its yellow color, which is not redish-brown like curcuma is in neutral circumstance.Added:From one scource it says: ' In acidic solutions (pH 8.6) solutions it turns bright red.'
If phenolphthalein is added to HBr?
If phenolphthalein is added to HBr (hydrobromic acid), which is a strong acid, the phenolphthalein indicator will remain colorless because it only changes color in the presence of a base. Since HBr is an acid, it will not cause the indicator to change color.
How will you identify hydrochloric acid you have only turmeric indicator?
it turns red colour
What color when acid is put on turmeric indicator?
it turns yellow
What is the color of the indicator when an excess of hydrochloric acid has been added?
The indicator turns pink when an excess of hydrochloric acid has been added in a titration.
How can you identify hydrochloric acid sodium hydroxide and sugar solution with the help of turmeric indicator?
Hydrochloric acid: yellow color Sodium hydroxide: brown color Sugar: unchanged
Why the colour become red when we put hydrocloric acid on termeric paper?
Turmeric paper contains curcumin, a natural pH indicator that changes color in response to acidity. When hydrochloric acid is applied, the acidic environment causes curcumin to undergo a chemical change, resulting in a red coloration. This color change indicates the presence of acid, demonstrating the pH-sensitive properties of turmeric.
What color would hydrochloric acid pH 1 turn universal indicator?
Hydrochloric acid at pH 1 would turn universal indicator red, indicating a strongly acidic solution.
What is the colour with universal indicator hydrochloride acid in stomach?
Universal indicator changes color to red in the presence of hydrochloric acid in the stomach, indicating a low pH.
What effect does hydrochloric acid have on universal indicator paper?
Hydrochloric acid will typically turn universal indicator paper red, indicating a low pH or acidity. Universal indicator paper changes color based on the pH of the solution it comes into contact with, with red indicating a strong acid.
What colour does universal indicator turn in dilute hydrochloric acid?
Universal indicator will turn red or pink in dilute hydrochloric acid.
What is the reaction of turmeric with hydrochloric acid?
If it is adulterated a black colour will be formed :D
What colour does universal indicator change to Hydrochloric acid is added?
Universal indicator changes to red/orange when hydrochloric acid is added, indicating that the solution is acidic.
What is the reactions of hydrochloric acid to methyl orange?
Hydrochloric acid is an acid, so it reacts with methyl orange, which is a pH indicator. When added to hydrochloric acid, methyl orange turns red due to the low pH of the acid. This color change indicates the presence of an acidic solution.
