An indicator is typically a chemical that changes color if it comes in contact with an acid or a base. As you can see, the purple cabbage juice turns red when it mixes with something acidic and turns green when it mixes with something basic.

Considering this, how does cabbage juice work as a pH indicator?

Red cabbage juice contains a natural pH indicator that changes colors depending on the acidity of the solution. The pigment in red cabbage that causes the red color change is called flavin (an anthocyanin). At a lower pH, more hydrogen ions are in solution, and therefore the solution is acidic.

What is the pH of cabbage juice?

Figure 6.

pH Color
4 Purple
6 Violet
8 Blue
10 Blue-green

Why is red cabbage a bad indicator?

As you can see, the purple cabbage juice turns red when it mixes with something acidic and turns green when it mixes with something basic. Red cabbage juice is considered to be an indicator because it shows us something about the chemical composition of other substances.

Is Vinegar a base or acid or neutral?

Summary Vinegar is mildly acidic with a pH of 2-3. Apple cider vinegar is slightly more alkaline than pure vinegar because it contains more alkaline nutrients. However, it’s still acidic.

In this manner, how do you make purple cabbage juice?

ii) Drop the chopped-up cabbage into a blender and add a cup or two of water. Blend until the water is a nice purple color. 3) Once you have your purple juice, pour some into each of your two bowls. If you don’t want any cabbage chunks floating around, pour your juice through a strainer.

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Also, what color does ammonia turn when you add red cabbage juice?

This liquid is at about pH 7. Pour about 50 – 100 mLs of your red cabbage indicator into each 250 mL beaker. Add your various household solutions to your indicator until you see a color change. For example: Ammonia will turn your indicator green, NaOH -yellow, vinegar -red, and HCl – a deep red.

What Colour does red cabbage juice go when it is added to lemon juice?

The Brainliest Answer! Answer: An indicator is typically a chemical that changes color if it comes in contact with an acid or a base. As you can see, the purple cabbage juice turns red when it mixes with something acidic and turns green when it mixes with something basic.

How do you stop purple cabbage from bleeding?

To stop cabbage from bleeding in salads, cookbook author Ann Willan suggests you either toss it with 2 to 3 tablespoons of vinegar after shredding, or rinse the cabbage leaves with boiling water and vinegar. To stop the bleed when cooking, add acidic ingredients such as apple or wine.

How do you make red cabbage water?

Place the cabbage in a large beaker or other glass container and add boiling water to cover the cabbage. Allow at least 10 minutes for the color to leach out of the cabbage. Alternatively, you can place about 2 cups of cabbage in a blender, cover it with boiling water, and blend it.

Why does cabbage juice change color?

Red cabbage contains a water-soluble pigment called anthocyanin that changes color when it is mixed with an acid or a base. The pigment turns red in acidic environments with a pH less than 7 and the pigment turns bluish-green in alkaline (basic) environments with a pH greater than 7.

What happens if you pour salt into a cabbage?

Salt helps pull water out of the cabbage and vegetables to create an environment – a salty brine – for happy fermentation. Too much salt and the fermentation process slows down and beneficial bacteria do not rapidly multiply. Not enough salt and the fermentation proceeds too rapidly, and the sauerkraut turns out soft.

What color does cabbage juice turn in neutral?

For example, red cabbages contain an indicator pigment molecule called flavin, which is a type of molecule called an anthocyanin. Very acidic solutions will turn an anthocyanin red whereas neutral solutions will make it purplish and basic solutions will turn it greenish-yellow.

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How could you avoid an undesirable color change when preparing red cabbage?

Add lemon juice, vinegar, wine or another acidic liquid to the dish while the cabbage is cooking. While the alkaline quality of hard water can discolor the cabbage, the acidic quality of vinegars and other liquids helps protect the color.

Is red cabbage better than white?

While both green and red cabbage are excellent sources of this potent antioxidant, red cabbage contains about 30% more. One cup (89 grams) of chopped red cabbage packs in 85% of the recommended intake for vitamin C, which is the same amount found in a small orange (21).

How do you make red cabbage from scratch?


  1. Place butter, cabbage, apples, and sugar into a large pot. Pour in the vinegar and water, and season with salt, pepper, and clove.
  2. Bring to a boil over medium-high heat, then reduce heat to low, cover, and simmer until the cabbage is tender, 1 1/2 to 2 hours.

Why is red cabbage blue?

As long as they are acidic they stay red, but when they become non-acidic they turn blue. When you sauté red cabbage, the acids evaporate off and it can turn blue. All you have to do is add lemon juice or vinegar to bring back the bright red color.

How do you make litmus paper with red cabbage?


  1. Boil your red cabbage until the water it is boiling in is a red-purple colour from the cabbage.
  2. Cut your blotting paper into small strips.
  3. Put your blotting paper strips into the solution and leave them there to soak.
  4. Take them out and leave to dry.
  5. Your litmus strips are now ready to use!

What are the health benefits of cabbage juice?

This versatile vegetable can be eaten raw or steamed, fermented, and even juiced. Cabbage juice is loaded with nutrients, such as vitamins C and K, and drinking it is linked to many purported benefits, including weight loss, improved gut health, decreased inflammation, balanced hormones, and body detoxification.

How long does cabbage juice last?

around 3 days

Which product will turn yellow when cabbage juice is added?

Bases turn cabbage juice blue or green; acids turn it red or pink. The water shouldn’t change the color of the cabbage juice. You can make the cabbage juice turn yellow by adding a very strong base. Lye or solid drain opener is strong enough to make the cabbage juice turn yellow.