red
all acidic substances with a PH below 7< turn the Universal indicator red due to their acidity.
Universal indicator turns red when added to vinegar, indicating that the vinegar is acidic.
The indicator turns red or pink in the presence of vinegar, indicating acidity.
The answer will depend on which indicator is being used.
It will turn either blue or green, both a hue of blue. The reason of this is that Red Cabbage Juice is an indicator, which is used to see wether an object or chemical is an acid or a base. If the object is an acid it will turn a hue of pink, and if it is a base, it will turn a hue of blue. Which is why baking soda mixed with Red Cabbage Juice will turn blue or green.
Pink
It will turn a yellowish orange due to the acetic acid in vinegar. Carboxylic acids are weak by nature.
Limes turn brown due to a process called oxidation, where the enzymes in the fruit react with oxygen in the air. To prevent limes from turning brown, you can store them in a sealed container in the refrigerator, wrap them in plastic wrap, or sprinkle them with lemon juice to help slow down the oxidation process.
The answer will depend on which indicator is being used.
You can test the carrot indicator using common household chemicals like lemon juice (acidic) and baking soda (alkaline). The carrot juice will turn pink or red when mixed with acidic substances and green or blue when mixed with alkaline substances. Additionally, vinegar can serve as an acid for testing, while soap can be used to test for alkalinity.
To make a carrot acid-base indicator, extract the juice from a carrot by blending or grating it, then filter the juice to remove any solid particles. Add a few drops of the carrot juice to different solutions to observe color changes: acidic solutions will turn the indicator yellow or orange, while basic solutions will turn it purplish-red.
Orange juice would be acidic in nature, so it would likely turn red or pink in Universal indicator due to its low pH level.