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pH Testing of Common Liquids
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Arrange the following steps in the correct order for testing the pH of a liquid using universal indicator paper: A) Dip the indicator paper into the liquid, B) Compare the color change of the paper to the pH scale, C) Record the pH value, D) Prepare the liquid sample if needed.

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Choose the Best Answer

A

A→B→C→D

B

D→A→B→C

C

C→A→D→B

D

B→D→C→A

Understanding the Answer

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Answer

First, prepare the liquid sample if it needs to be diluted or filtered. Next, dip the universal indicator paper into the liquid so it absorbs the solution. Then, compare the paper’s color change to the pH scale chart to identify the approximate pH. Finally, record the determined pH value in your notes. This sequence ensures accurate and repeatable results.

Detailed Explanation

First you must prepare the liquid if it needs cleaning or dilution. Other options are incorrect because This order puts the recording step before the paper is dipped, so you would try to write a number before seeing any color; It starts with recording, which means you would write a number before the paper even touches the liquid.

Key Concepts

pH testing
acid-base chemistry
indicator solutions
Topic

pH Testing of Common Liquids

Difficulty

medium level question

Cognitive Level

understand

Practice Similar Questions

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1
Question 1

When measuring the acidity of a liquid using universal indicator paper, a lower pH value corresponds to a higher concentration of __________ ions.

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