Question

turns pink in the presence of phenolphthalein indicator
1 Vinegar
2 Spinach Juice
3 Orange Juice
4 Soap Solution​

Answer 1

Explanation:

The Phenolphthalein pH Range

Phenolphthalein is naturally colorless but turns pink in alkaline solutions. The compound remains colorless throughout the range of acidic pH levels but begins to turn pink at a pH level of 8.2 and continues to a bright magenta at pH 10 and above.