Homework Answers
1) H2SO4 is a very strong and volatile acid. Skin contact causes damage, in addition to inhalation. You have to wear protection and do it in a hood.
2) It is an astringent substance, which in its excess can be harmful, protection should be used to handle and wash it.
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Name Pre-Laboratory Questions #9 - Anions Due at the beginning of lab! (2 pts) 1. You mix a solution of Na SO, with BaCl2 and a precipitate forms. What is the next step? 2. What observation are you looking for when nitric acid is added to a precipitate? 3. Reference the solubility rules from experiment #5. Will Na2SO4 form a precipitate when combined with BaCl2? 4. Reference the solubility rules from experiment #5. Will NaCl form a precipitate when combined...
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Pre-Laboratory Assignment 1. What safety precautions must be observed when using (a) pyridinium tribromide? (b) acetic acid? 2. Calculate the theoretical yield for the bromination of both stilbenes and cinamic acid, assuming the presence of excess pyridinium tribromide. Note the theoretical yields here and in your laboratory notebook 3. Draw the mechanism, including the intermediate bromonium ion, generated in the bromination of trans-2-butene. 4. (a) Look up and draw structures for cinnamic acid, cis-stilbene, and trans-stilbene. (b) Predict the relative...
1. A patient under isolation precautions is being transported to the x-ray department. He has no mask on and sneezes in the elevator. This scenario is an example of what type of hazard? A. Chemical hazard B. Sharps hazard C. Chain-of-infection hazard D. Physical hazard 2. What is the best procedure for removing gloves when leaving the laboratory? A. Take gloves off last and leave. B. Take gloves off and wash hands. C. Leave gloves on and remove them outside...
what is the theoretical yield of anisalacetophenone and
dibenzalacetone formed? thank you.
The Aldol Condensation Precautions: Acetone, ethanol and acetophenone are flammable; work in a fume hood. Sodium hydroxide is a strong base and can cause severe skin burns and eye damage. Safety goggles are required. Gloves are recommended. Purpose To carry out two Aldol condensation reactions in which no heat is needed to obtain the condensation product. The two reactions differ in the number of enolizable protons at the...
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