Related Questions for Experiment 15 1. a Which of the solvents in this experimen
ID: 959616 • Letter: R
Question
Related Questions for Experiment 15 1. a Which of the solvents in this experiment is an effective grease remover? b. Explain why it is so effective 2. The odor of acrolein is frequently strong in restaurants that feature charcoal-broiled food. Explain the presence of this odor 3. How does a home water softener produce soft water? 4. During World War II, homemakers were urged to turn in bacon grease for use in the war effort. Explain how the grease could be converted into useful products. 5. Some soap manufacturers advertise their product as not leaving a soap film. What does this indicate about the structure of their product? Formation of the first hydroperoxide molecule in a liquid shortening is a rare occurence, but it can trigger (via "free radicals") formation of two new hydroperoxide molecules. What does this tell you about shortening that is just slightly rancid? 6·Explanation / Answer
2) Acrolein is the simplest unsaturated aldehyde. It is a colourless liquid with a piercing, disagreeable, acrid smell. The smell of burnt fat (as when cooking oil is heated to its smoke point) is caused by glycerol in the burning fat breaking down into acrolein.
3)Most water softeners work through a process called ion exchange. T hey take out the minerals in the water that make it hard (calcium and magnesium) and replace them with something that doesn't cause water hardening and other problems (sodium or sometimes potassium).
Specifically, softeners filter water through resin beads packed with sodium. The hard water ions trade places with the sodium ions, leaving the water soft. Once the resin beads are depleted, they have to be regenerated. This is the purpose of water softener salt (sodium chloride or potassium chloride), and why it has to be continually added to conventional softeners.
4) During WW2, even ordinary household grease was saved. One tablespoon of used cooking grease made enough gunpowder for five bullets. It was suggested that housewives save at least one tablespoon a day. Grease and waste fats were kept in a can, which was turned in at the local butcher shop when it was full. The waste fat makes glycerin which made gunpowder for weapons.