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In Filkenstein test, the reaction is driven by the precipitation of the NaCl or NaBr in the acetone solvent
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- TRUE OR FALSE 1. Sodium arsenite is formed due to the solubility property of arsenic trioxide in sodium hydroxide. 2. The permanganate method is always carried out in a highly acidic medium. 3. The color of permanganate solution renders impossible accurate readings at the lower meniscus. 4. Sodium bicarbonate in the standardization of iodine solution acts as a buffer. 5. Sulfuric acid in permanganate titration prevents the formation of reduction products.Suppose there was a large air bubble in the tip of the acid burette during the titration and it was dislodged toward the end of your titration. Explain the effect that this would have on the calculated value of the acid's molarity.For titration, what is the purpose of a dropwise rate?
- What is the methodology of acid base titration for sodium hydroxide and hydrochloric acid.Would you recommend adding the phenolphthalein and methyl orange indicators together at the start of the titration to save time?Compare and contrast the three general methods of argentometric titration. What are the strengths and limitations of each method? Explain.
- 2. After dissolving the KHP with water, a student noticed some undissolved solid, but continued with the titration as instructed by the procedure. He titrated until the pink color persisted for 30 sec and recorded the volume of titrant required. Preparing for the second determination, he set the reaction solution aside and added some more NaOH to the buret. He was about to pour the reaction solution down the drain, so he could rinse and reuse the flask, when he saw that the pink color had disappeared! a) What happened? b) What can the student do to correct for this erTor and salvage this trial? How should the data sheet be modified to reflect this correction? 3. Another student began adding titrant to the acid solution, but stopped when she suddenly realized that she forgot to add the 3 drops of phenolphthalein. When she did, the solution immediately turned dark red! a) What happened? b) What can the student do to correct for this error and salvage this trial? How should the data sheet…Why did the titrations performed need to be started immediately after adding the sulfuric acid?Volumetric Analysis In Part A, a drop of the NaOH titrant adheres to the side of the buret (because of a dirty buret) between the initial and final readings for the titration. As a result of the “clean glass” error, how will the calculated molar concentration of the NaOH solution be affected?
- Whether purging of nitrogen gas is required or not, during the acid-base titration of unknown samples using potentiometric titration method ?During this course you will use a basteriallysis buffer One of the ingredients of his buffer as Triton X-100 What is the function of this chemical?PLEASE HELP ME ANSWER QUESTION 5) A student starts a titration without phenolphthalein in the Erlenmeyer flask. The student realizes the mistake and adds the phenolphthalein during the titration. Once the phenolphthalein is added, the solution in the Erlenmeyer flask remains colorlessCan the results of this titration be used? Concisely explain.