Question

the following ph levels were found for four different liquids

which of the following is considered an acid?

hand soap
water
milk
lemon juice

Explanation:

Step1: Recall pH scale properties

Acids have \(pH < 7\), bases have \(pH>7\), and \(pH = 7\) is neutral.

Step2: Analyze each option

• Hand - soap: \(pH = 12>7\), so it is a base.
• Water: \(pH = 7\), so it is neutral.
• Milk: \(pH = 11>7\), so it is a base.
• Lemon juice: \(pH = 4<7\), so it is an acid.

Answer:

Lemon Juice