Science, asked by swatiomrutu, 9 months ago

Why does the colour changes on onion into red after pouring vinegar

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Answered by Anonymous

Explanation:

Universal indicator is a chemical that changes color in the presence of acids and bases from a pH of 2 to 10. ... Vinegar is an acid, so when you poured the indicator solution into the second flask, it turned red.

Answered by rohitking92

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The Science of Vinegar Pickling, Explained

Acid, salt and time lead to greatness.

By Max Bonem

Updated May 24, 2017

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ANDREJ ISAKOVIC/AFP/GETTY IMAGES

Spring has sprung and that means one thing: It’s time for pickles. Whether on a burger, within a taco or atop a salad, pickles give any dish great added texture and that vinegary bite that can easily become addicting. However, what is it that vinegar actually does to turn fresh fruit and vegetables into the sweet-savory-sour pickles that we love? Here’s a look at the science behind vinegar pickles.

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