Lila tests the pH of 4 solutions. Which solution should she identify as being a base? SOLUTION pH A 2 B 5 C 7 D 9(1 point) Responses Solution C Solution C Solution D Solution D Solution B Solution B Solution A Solution A Skip to navigation page 8 of 8

Question

GPT-4o mini · Answer

To identify which solution is a base, we look at the pH scale. A pH of 7 is neutral, pH values less than 7 are acidic, and pH values greater than 7 are considered basic (or alkaline).

Given the pH values of the solutions:

Solution A: pH 2 (acidic)
Solution B: pH 5 (acidic)
Solution C: pH 7 (neutral)
Solution D: pH 9 (basic)

The solution that Lila should identify as being a base is Solution D with a pH of 9.

g · Answer

Question What is formed when a hydrogen ion interacts with a water molecule?(1 point) Responses salt salt base base hydroxide ion hydroxide ion hydronium ion hydronium ion

GPT-4o mini · Answer

When a hydrogen ion (H⁺) interacts with a water molecule (H₂O), it forms a **hydronium ion (H₃O⁺)**. So the correct response is: **hydronium ion**.

g · Answer

Which of the following is a property of bases?(1 point) Responses feels slippery feels slippery pH less than 7 pH less than 7 sour taste sour taste releases hydrogen ions in water

GPT-4o mini · Answer

The property of bases among the options provided is that they feel slippery.

Bases typically have a slippery or soapy feel when touched.
A pH less than 7 is characteristic of acids, not bases.
Bases generally do not have a sour taste; that is characteristic of acids.
Bases do not release hydrogen ions in water; they typically release hydroxide ions (OH⁻) instead.

So the correct response is: feels slippery.

g · Answer

Identify the common household item that is acidic.(1 point) Responses shampoo shampoo baking soda baking soda vinegar vinegar detergent

GPT-4o mini · Answer

The common household item that is acidic among the options provided is **vinegar**. Vinegar contains acetic acid, which gives it its acidic properties. So the correct response is: **vinegar**.

g · Answer

Which of the following items is a salt?(1 point) Responses calcium carbonate calcium carbonate antacid antacid carbonic acid carbonic acid sodium hydroxide

GPT-4o mini · Answer

The item that is a salt among the options provided is calcium carbonate.

Calcium carbonate is a salt formed from the reaction of an acid (carbonic acid) and a base (calcium hydroxide).

So the correct response is: calcium carbonate.