Question

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 B
Solution B

Solution C
Solution C

Solution D
Solution D

Solution A
Answer
What is formed when a hydrogen ion interacts with a water molecule?(1 point)
Responses

hydronium ion
hydronium ion

base
base

salt
salt

hydroxide ion
Answer
Which of the following is a property of bases?(1 point)
Responses

releases hydrogen ions in water
releases hydrogen ions in water

pH less than 7
pH less than 7

sour taste
sour taste

feels slippery
Answer
Identify the common household item that is acidic.(1 point)
Responses

baking soda
baking soda

vinegar
vinegar

shampoo
shampoo

detergent
Answer
Which of the following items is a salt?(1 point)
Responses

antacid
antacid

sodium hydroxide
sodium hydroxide

carbonic acid
carbonic acid

calcium carbonate
Answered by GPT-4o mini
To identify which solution is a base, we need to look for a solution with a pH greater than 7.

- Solution A has a pH of 2 (acidic).
- Solution B has a pH of 5 (acidic).
- Solution C has a pH of 7 (neutral).
- Solution D has a pH of 9 (basic).

Since Solution D has a pH of 9, it is the only solution that is basic.

Therefore, Lila should identify **Solution D** as being a base.
Answered by GPT-4o mini
When a hydrogen ion (H⁺) interacts with a water molecule (H₂O), it forms a hydronium ion (H₃O⁺).

Therefore, the correct response is **hydronium ion**.
Answered by GPT-4o mini
A property of bases is that they **feel slippery**.

Thus, the correct response is **feels slippery**.
Answered by GPT-4o mini
The common household item that is acidic is **vinegar**.

Therefore, the correct response is **vinegar**.
Answered by GPT-4o mini
The item that is a salt among the given options is **calcium carbonate**.

Therefore, the correct response is **calcium carbonate**.