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If we add NaOH drop by drop to a HcL and phenophthalein solution what happens? and why do you think it happens?
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If we add NaOH drop by drop to a HcL and phenophthalein solution what ...
Titration of NaOH with HCl and Phenolphthalein
When NaOH is added drop by drop to a solution of HCl and phenolphthalein, a color change occurs in the solution. This is due to a neutralization reaction between the strong base NaOH and the strong acid HCl.
Explanation
- Color change: Initially, the solution is colorless due to the presence of HCl. As NaOH is added, it reacts with the HCl to form NaCl and water. Once all the HCl is neutralized, the solution becomes basic and the phenolphthalein indicator changes color from colorless to pink.
- Neutralization reaction: The reaction between NaOH and HCl can be represented as follows:
NaOH + HCl -> NaCl + H2O
The pink color of phenolphthalein indicates the presence of excess base in the solution. - Endpoint: The point at which the solution changes color permanently is known as the endpoint of the titration. This indicates that the reaction is complete and all the acid has been neutralized by the base.
Significance
- Titration: This experiment is a common method used in chemistry to determine the concentration of an unknown solution. By titrating a known concentration of NaOH with HCl, we can calculate the concentration of the acid.
- Indicator: Phenolphthalein is used as an indicator in this titration because it changes color at the pH range of 8-10, making it ideal for detecting the endpoint of the reaction.
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If we add NaOH drop by drop to a HcL and phenophthalein solution what happens? and why do you think it happens?
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If we add NaOH drop by drop to a HcL and phenophthalein solution what happens? and why do you think it happens? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about If we add NaOH drop by drop to a HcL and phenophthalein solution what happens? and why do you think it happens? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If we add NaOH drop by drop to a HcL and phenophthalein solution what happens? and why do you think it happens?.
If we add NaOH drop by drop to a HcL and phenophthalein solution what happens? and why do you think it happens? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about If we add NaOH drop by drop to a HcL and phenophthalein solution what happens? and why do you think it happens? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If we add NaOH drop by drop to a HcL and phenophthalein solution what happens? and why do you think it happens?.
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