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| − | <math>8</math>. Which substance may be treated with bleach (sodium hypochlorite) to render it less hazardous?
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| − | (A) Sodium cyanide
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| − | (B) Ammonia
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| − | (C) Hydrochloric acid
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| − | (D) Ozone
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| − | 9. Which indicator would be most suitable for a titration to determine the concentration of ammonia in a window cleaning solution using aqueous HCl?
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| − | (A) Eriochrome Black T
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| − | (B) Ferroin
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| − | (C) Methyl orange
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| − | (D) Phenolphthalein
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| − | 11. Ethane, C2H6, and diborane, B2H6, do not adopt analogous molecular structures. Which experimental technique would be least useful in establishing this fact?
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| − | (A) Infrared spectroscopy
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| − | (B) Mass spectrometry
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| − | (C) Nuclear magnetic resonance spectroscopy
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| − | (D) X-ray crystallography
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