Ph, Acids, and Bases Quick Check
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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 D
Solution D
Solution A
Solution A
Solution B
Solution B
Solution C
Solution D
What is formed when a hydrogen ion interacts with a water molecule?(1 point)
Responses
hydroxide ion
hydroxide ion
hydronium ion
hydronium ion
base
base
salt
salt
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
releases hydrogen ions in water
releases hydrogen ions in water
sour taste
feels slippery
Identify the common household item that is acidic.(1 point)
Responses
shampoo
shampoo
detergent
detergent
vinegar
vinegar
baking soda
vinegar
Which of the following items is a salt?(1 point)
Responses
carbonic acid
carbonic acid
sodium hydroxide
sodium hydroxide
antacid
antacid
calcium carbonate
calcium carbonate
calcium carbonate
To determine which solution should be identified as a base, we need to understand the pH scale.
The pH scale measures the acidity or alkalinity of a solution and ranges from 0 to 14. A pH of 7 is considered neutral, pH values below 7 indicate acidity, and pH values above 7 indicate alkalinity or basicity.
In this case, Solution D has a pH of 9. Since a pH above 7 is considered basic, Solution D should be identified as the base. Thus, the correct answer is Solution D.