Chemistry of hazardous materials homework - 12 questions

10/30/14 5:40 PMTake Test: Unit II Assessment

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What is the principal hazardous feature of hydrochloric acid?

Hypochlorous acid HCl vapor/gas Perchloric acid generation Sodium polyacrylate generation

Question 1 4 points Save AnswerSave Answer

Which of the following statements is FALSE regarding incidents involving corrosive materials?

The number 8 is contained as a component of the basic description listed on shipping papers. Paramedics should not induce vomiting unless given direction to do so by a physician. At incidents in which corrosives have been splashed into the eyes of a victim, immediately flush the eyes with water for 5 minutes. At skin splashing incidents, the affected skin tissue area should be extensively flushed with water.

Question 2 4 points Save AnswerSave Answer

When is concentrated perchloric acid most dangerous?

When it comes in contact with zinc

When it’s temperature is less than 194oF When it is cold When it is hot and comes in contact with sawdust

Question 3 4 points Save AnswerSave Answer

Which of the following is TRUE?

Nonmetallic oxides react with water to form a base.

Sodium oxide is a metallic oxide that combines with water to produce a base. Acids react with nonmetallic oxides to form a salt of the metal and water. Acids are commercially available only in steel containers in 55, 30, 6.5, and 5.0 gallons.

Question 4 4 points Save AnswerSave Answer

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The pH scale designates the acidity or alkalinity of an aqueous solution. What does this scale actually express?

Hydrogen ion concentration Free radical components Corrosion protection Covalent bonding potential

Question 5 4 points Save AnswerSave Answer

When an aqueous solution of hydrofluoric acid is stored in a glass bottle for a long time, what happens?

The solution will degrade to sodium silicate. The solution appears milky. The glass will appear crazed and cracked. Crystals will form that are explosive in nature.

Question 6 4 points Save AnswerSave Answer

What chemical is used as both a food grade additive of soft drinks and as a raw material for manufacturing a number of metal phosphates?

Elemental fluorine Perchloric acid Anhydrous hydrogen fluoride Phosphoric acid

Question 7 4 points Save AnswerSave Answer

All of the following are the uses for a chemical that can severely corrode body tissue causing slow healing burns, painful sores, and tissue destruction below the epidermis EXCEPT:

it etches glass.

it is used to produce computer chips. it is used as a fire retardant. it pickles copper and brass.

Question 8 4 points Save AnswerSave Answer

Why is phosphoric anhydride of importance to an EH&S or FS professional?

It needs to be segregated from combustible matter because it evolves considerable heat when it reacts with water.

Question 9 4 points Save AnswerSave Answer

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It is explosive in nature. It reacts violently with any acid. It can act as a "buffer" product between stored piles of oxidizers.

This "workhorse of the industrial world" also can completely destroy wood, textiles, and paper in its concentrated form. What is the name of this chemical?

Hydrofluoric acid Sulfuric acid Hydrochloric acid Nitric acid

Question 10 4 points Save AnswerSave Answer

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When sulfuric acid is a component of polluted air, it chemically attacks statues, memorials, and monuments made from limestone. Given that the most common mineral in limestone is calcium carbonate, describe how these limestone objects are corroded by the sulfuric acid in polluted air. What chemical reaction is involved here?

Question 11

Arial 3 (12pt)

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You are a member of a spill response crew on the scene of a domestic transportation accident involving an overturned tanker truck. The tanker truck is leaking a known corrosive material and the contents are fuming. Using Figure 8.14 on p. 339 of the textbook, describe how you would use a decision tree analysis to determine if foam may be effective for vapor control? What other procedures might you use to save lives and property, and what other procedures might you use to protect the environment in this incident?

Question 12

Arial 3 (12pt)

30 points Save AnswerSave Answer

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