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
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Solution D
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
hydroxide ion
hydronium ion
Which of the following is a property of bases?(1 point)
Responses
pH less than 7
pH less than 7
feels slippery
feels slippery
sour taste
sour taste
releases hydrogen ions in water
feels slippery
Identify the common household item that is acidic.(1 point)
Responses
baking soda
baking soda
vinegar
vinegar
detergent
detergent
shampoo
vinegar
Which of the following items is a salt?(1 point)
Responses
calcium carbonate
calcium carbonate
carbonic acid
carbonic acid
antacid
antacid
sodium hydroxide
calcium carbonate
To identify which solution should be identified as a base, Lila needs to understand the pH scale. The pH scale ranges from 0 to 14, with 0 being the most acidic, 7 being neutral, and 14 being the most basic (or alkaline).
Given the pH values for the four solutions, she can easily determine the solution that should be identified as a base by looking for the highest pH value.
In this case, solution D has a pH of 9, which is the highest among the four solutions. Therefore, Lila should identify solution D as being the base.