Question

виявлення йонів гідрогену в розчині до першої проби хлоридної кислоти добавте краплю розчину лакмусу. до другої метилового оранжевого. до третьої фенолфталеїну​

Answer 1

Procedure for Detecting Hydrogen Ions in Solution

To detect the presence of hydrogen ions in a solution, you can perform a simple experiment using different indicators. Here's a detailed procedure for carrying out this experiment:

1. Prepare the Solutions: - Start by preparing three separate solutions: the first one being the sample solution of hydrochloric acid, and the other two being indicator solutions of litmus and methyl orange.

2. Add the Indicators: - To the first sample of hydrochloric acid solution, add a drop of litmus solution. - To the second sample of hydrochloric acid solution, add a drop of methyl orange solution. - To the third sample of hydrochloric acid solution, add a drop of phenolphthalein solution.

3. Observation: - Observe the color changes in each of the solutions after adding the indicators.

4. Interpretation: - The litmus indicator will change color in response to the presence of hydrogen ions, indicating the acidity of the solution. - The methyl orange indicator will also exhibit a color change, providing further confirmation of the presence of hydrogen ions. - The phenolphthalein indicator, on the other hand, may not show a significant color change in response to the presence of hydrogen ions, as it is more commonly used to indicate the presence of hydroxide ions.

This experiment allows for the detection of hydrogen ions in the hydrochloric acid solution using different indicators, providing valuable insights into the acidity of the solution.

For further details or variations on this experiment, feel free to ask!