Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
Grapefruit Juice
B
Baking Soda Solution
C
Water
D
Olive Oil
Understanding the Answer
Let's break down why this is correct
Answer
An acidic liquid will have a pH below 7, so when you dip universal indicator paper in it the strip will turn red or orange, showing a low pH. For instance, vinegar has a pH around 2–3, so the paper turns a deep red, indicating acidity. In contrast, a neutral liquid like tap water (pH 7) would leave the paper green, while a basic liquid would make it blue. Thus, any liquid that turns the indicator paper red or orange is classified as acidic.
Detailed Explanation
The juice from a grapefruit has a low pH around 3, meaning it contains many hydrogen ions. Other options are incorrect because Many think baking soda is acidic, but it actually contains carbonate ions that raise the pH; Plain water is neutral, not acidic.
Key Concepts
pH Scale
Acidity vs. Alkalinity
Universal Indicator
Topic
pH Testing of Common Liquids
Difficulty
easy level question
Cognitive Level
understand
Practice Similar Questions
Test your understanding with related questions
1
Question 1Which of the following common liquids would likely have the highest pH level when tested, indicating it is more basic?
hardChemistry
Practice
2
Question 2Which of the following liquids are likely to have a pH less than 7, indicating they are acidic? Select all that apply.
easyChemistry
Practice
3
Question 3When measuring the acidity of a liquid using universal indicator paper, a lower pH value corresponds to a higher concentration of __________ ions.
mediumChemistry
Practice
4
Question 4Which of the following liquids is most likely to have a pH below 7 when tested with universal indicator paper?
easyChemistry
Practice
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