Final answer:
Orange juice with a pH of 4 can be described as moderately acidic.
Step-by-step explanation:
Orange juice with a pH of 4 can be described as moderately acidic.
Water with a pH of 7 is considered neutral. Anything with a pH below 7, such as orange juice, is acidic.
For example, wine with a pH of 3.0 is also acidic. On the other hand, substances with a pH higher than 7, like household ammonia with a pH of 11.0, are considered basic.