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Unit Assignment

Triethylaluminum (TEA) is an alkyl aluminum compound that has been used as the active component in flamethrowers. Which of the following statements is INCORRECT regarding TEA?

  TEA is a corrosive material.
  TEA is a pyrophoric material.
  Aluminum hydroxide is produced from the combustion of TEA.
  TEA has a flashpoint of -53 deg C.
  1. Di-lithium is composed of two lithium atoms. Which of the following statements regarding di-lithium or lithium is FALSE?
  They oxidize very slowly in air.
  They remain in the solid state even after getting fragmented.
  Their temperature exceeds the boiling point of water during their reaction to water.
  The hydrogen dissipates into the surrounding environment when reacting to water.
  1. A fruit processing company has a permit to discharge their process wastewater to irrigate an adjacent farmland. Their permit limits the pH of the discharge to 7.0. If the wastewater is 1000 times more acidic than the limit, what is the current pH of the water?
  5.0
  3.0
  4.0
  2.0
  1. The primary acids in acid rain are sulfuric and nitric acids. When it rains, a chemical reaction between the sulfuric acid (in the rain) and limestone structures will form carbon dioxide, water, and a salt of the metal. This salt is:
  CaCl2.
  CaCO3.
  Ca(NO3)2.
  CaSO4.
  1. Which of the following acids is present in soft drinks?
  Hydrofluoric acid
  Glacial acetic acid
  Phosphoric acid
  Oxalic acid
  1. When metallic potassium reacts with water, the __________ produced initially concentrates around the metal where it self-ignites.5 points   
  2. __________, which is considered a weak acid, reacts with the components of glass, so it is transported in polyethylene or other acid resistant plastic containers.
  3. A paramedic responded to an apartment emergency call where a young boy inadvertently swallowed a corrosive (low pH) material. As an initial action, the paramedic could neutralize the kid’s stomach with Philips’ Milk of Magnesia, a form of magnesium __________.
  4. __________ is a regulatory agency that requires employers to provide suitable facilities for quick drenching and flushing of the eyes and body in all areas within a workplace where employees may be exposed to a corrosive material.5 points   
  5. Aluminum carbide is used as a catalyst in the chemical industry. When it reacts with water, __________ is produced as a hydrolysis product.

5        points   

  1. A truck transporting concentrated acetic acid was involved in a non-injury accident resulting in the release of 300 gallons of acid. Part of the mitigation is to neutralize the spilled acid with a solid material such as air-slaked lime. Air-slaked lime is a commercially available product that consists of calcium hydroxide and calcium carbonate. Quicklime is the common name for calcium hydroxide. When quicklime is exposed to moist air, it absorbs atmospheric CO2 and forms calcium carbonate.
  2. Show the chemical formula of air-slaked lime. Explain the chemical interaction involved with the use of air-slaked lime to neutralize the acid. Is this an effective neutralization method for this release?
  3. Explain why OSHA requires employers to limit employee exposure to acetic acid vapors.

Your total response must be at least 200 words in length. You are required to use at least your textbook as source material for your response. All sources used, including the textbook, must be referenced. Paraphrased and/or quoted material must have accompanying citations in APA format.

  1. The element titaniumoccurs on earth as titanium (IV) oxide and is found mostly in the mineral called rutile. Rutile is abundant in beach sands in Australia and South Africa. For titanium to be useful, rutile has to be processed to obtain the basic metal form of titanium. Although the process is costly, titanium is gaining popularity as a material for various equipment due to its strength and light weight. One such application is in sports equipment.
  2. Explain the chemical process of manufacturing the metal form of titanium.
  3. Explain why titanium is a good choice of material for golf clubs. When not in use, discuss at least one precaution to observe when storing clubs?
  4. During the fabrication of golf clubs, finely divided titanium is generated, which poses a dangerous risk of fire and explosion. Explain the chemical process involved.

Your total response must be at least 200 words in length. You are required to use at least your textbook as source material for your response. All sources used, including the textbook, must be referenced. Paraphrased and/or quoted material must have accompanying citations in APA format.

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