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 A
Solution A
Solution D
Solution D
Solution B
Solution B
Solution C
Solution D
What is formed when a hydrogen ion interacts with a water molecule?(1 point)
Responses
hydronium ion
hydronium ion
hydroxide ion
hydroxide ion
salt
salt
base
hydronium ion
Which of the following is a property of bases?(1 point)
Responses
releases hydrogen ions in water
releases hydrogen ions in water
feels slippery
feels slippery
pH less than 7
pH less than 7
sour taste
feels slippery
Identify the common household item that is acidic.(1 point)
Responses
shampoo
shampoo
baking soda
baking soda
detergent
detergent
vinegar
vinegar
Which of the following items is a salt?(1 point)
Responses
carbonic acid
carbonic acid
calcium carbonate
calcium carbonate
antacid
antacid
sodium hydroxide
calcium carbonate
To identify which solution is a base, we need to understand the pH scale. The pH scale ranges from 0 to 14, with 0 being the most acidic and 14 being the most basic (or alkaline). A pH of 7 is considered neutral.
In this case, we compare the pH values of the given solutions:
Solution A has a pH of 2.
Solution B has a pH of 5.
Solution C has a pH of 7.
Solution D has a pH of 9.
Since a pH of 7 is neutral, any pH value higher than 7 indicates a basic solution. Therefore, Solution D with a pH of 9 should be identified as a base.