What indicator should be used for titration? What is titration of oxygen? Is titration qualitative or quantitative? How do you prepare phenolphthalein indicator for titration? What is a redox titration in analytical chemistry? How do you eliminate dissolved carbon dioxide in titration?
Why we use phenolphthalein indicator in the determination of the strength of NaOH by using standard oxalic acid? Why not the others indicator? What does the technique of chromatography allow you to do in an experiment? How could you test your gold jewellery ...
Describe how on a molecular level the indicator phenolphthalein works in different transitions. Indicate whether the following molecules are IR or Raman active. Prove and explain how you got each your answers: a) H_2 b) HCl Explain why sharpening a pencil is a ...
This is often indicated by a color change, for example by adding a few drop of phenolphthalein, a commonly used acid‑base indicator, which changes from pink in alkali to colorless in acid. 3. Calculate the Molarity Use the titration formula. If the titrant and analyte have a 1:1 mole...
How does chemistry relate to sepsis (an infection where antigens invade the red blood cells)? Why do atmospheric aerosols have a cooling effect? What are some causes of a high percent error when titrating Ca(OH)2 with HCl and phenolphthalein indicator?
blood. If the color does not change, the sample does not contain a detectable amount of blood. Note that the swab will change color, turning pink after about 30 seconds, even if no blood is present. This is a result of hydrogenperoxideoxidizing the phenolphthalein in the indicator solution....
Phenolphthalein Thymolphthalein Club soda (optional) Here's How If you are making your own bubble solution, mix the detergent and water. Add the sodium hydroxide and indicator to the bubble solution. You want enough indicator so that the bubbles will be deeply colored. For each liter of bubb...
How do you prepare phenolphthalein indicator for titration? Why is NaOH used in titration? Why is titration repeated three times? What makes a good indicator for titration? Why is HCl not used in titration? How do you find pKa from a titration curve?
Calculate the molarity of the acetic acid in vinegar, if a 500ml sample of the vinegar requires 43.50 ml of 0.105 M NaOH to reach a phenolphthalein endpoint in a titration. What is the indicator in the titration with permanganate solution?