Textbook Question
Predict the products of the following acid–base reactions.
(g) HCOOH + CH3O– ⇌
(h) +NH3CH2COOH + 2 –OH ⇌
3. Acids and Bases
Acids and Bases
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In the context of acid-base chemistry, what is a negative control?
A
A sample that does not contain the acid or base being tested
B
A buffer solution that maintains a constant pH
C
A solution with a known pH used to calibrate pH meters
D
A solution that neutralizes the acid or base in a reaction
Verified step by step guidance1
Understand the concept of a negative control: In scientific experiments, a negative control is a group or sample that does not receive the experimental treatment or condition. It is used to ensure that the experimental results are due to the variable being tested and not some other factor.
Identify the role of a negative control in acid-base chemistry: In the context of acid-base chemistry, a negative control would be a sample that does not contain the acid or base being tested. This helps to confirm that any observed changes in the experiment are due to the presence of the acid or base.
Evaluate the given options: Consider each option and determine if it fits the definition of a negative control. A buffer solution, a solution with a known pH, and a solution that neutralizes the acid or base do not fit the definition of a negative control.
Focus on the correct option: The correct option is 'A sample that does not contain the acid or base being tested' because it aligns with the definition of a negative control by not including the variable being tested.
Conclude the analysis: By understanding the role of a negative control and evaluating the options, you can confidently identify the correct answer in the context of acid-base chemistry.
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