Solved Experiment 1, Part 4: What is the purpose of adding - Chegg
Experiment 1, Part 4: What is the purpose of adding the phenolphthalein indicator to the ammonia solution? to observe the shift in the equilibrium because ammonia and the ammonium ion are …
Solved Phenolphthalein is used as a visual indicator in a - Chegg
Question: Phenolphthalein is used as a visual indicator in a strong acid-strong base titration becauseQuestion 2 options:a) it has a pink color at the equivalence pointb) it is …
Solved State whether each of the following is true or - Chegg
a) Phenolphthalein indicator is not affected by the pH of the solution. b) Phenolphthalein indicator changes colour close to the point of neutralisation which shows the end-point of the titration. c) …
Solved The flask contains 10.0 mL of HCl and a few drops - Chegg
The flask contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.170 M NaOH. It requires 15.1 mL of the NaOH solution to reach the end point of the …
Solved Phenolphthalein is an acid base indicator. What color
Question: Phenolphthalein is an acid base indicator. What color does it possess in the presence of excess hydrogen (i.e., hydronium) ions?What color does it possess in the presence of …
Solved 4. When using phenolphthalein as the indicator in an - Chegg
4. When using phenolphthalein as the indicator in an acid-base titration, we usually choose to place the acid in the titration flask and ncutralize it with base from the buret, rather than to …
Solved QUESTION 1 When titrating with phenolphthalein - Chegg
QUESTION 1 When titrating with phenolphthalein indicator, how can you tell when the endpoint is near (but not yet at the end point)? The solution gets warmer The solution turns a permanent …
Solved phenolphthalein has a color change over the ph range
Question: phenolphthalein has a color change over the ph range of 8.2 to 10.0 methyl orange has a color change over the pH range of 3.2 to 4.4. Although the pehnolphthalein indicator is …
Acid-Base Indicator | Definition, Concept & Examples
2023年11月21日 · Phenolphthalein indicator: The phenolphthalein indicator is a weak acid that has two different structures based on whether it is in an alkali (pink) or acid (colorless) solution;
Solved A. blue Phenolphthalein is the acid/base indicator - Chegg
A. blue Phenolphthalein is the acid/base indicator used in today's experiment. What is the color of phenolphthalein in a basic solution such as NaOH? B. pink What is the color of …