(a)
Interpretation:
Among acetylsalicylic acid, acetic acid, phosphoric acid, and acid anhydride, that are hazardous to breathe dust/vapor/fumes should be explained.
Concept introduction:
Material Safety DataSheet is a document that contains details on the potential health effects of exposure to the chemicals. It also provides guidance for safe procedures to handle chemical products. The hazard evaluations on the use and storage of chemicals and the safety measure taken if accidents occur.
(b)
Interpretation:
Among acetylsalicylic acid, acetic acid, phosphoric acid, and acid anhydride the compounds that are most likely to be inhaled accidentally on the basis of their boiling point should be determined.
Concept introduction:
The temperature at that the vapor pressure of a liquid is equal to the atmospheric pressure is termed as the boiling point of that liquid. Lower the atmospheric pressure above a liquid, the lower is the temperature to boil the liquid. The temperature at that a substance changes state from its solid-state to liquid state is known as its melting point. The solid and liquid phase of a substance exists in equilibrium at the melting point.
(c)
Interpretation:
Among acetylsalicylic acid, acetic acid, phosphoric acid, and acid anhydride, the compounds that are most dangerous to inhale based on the GHS hazard information should be explained.
Concept introduction:
Chemicals used in the laboratories affect our lives. The widespread utilization of chemicals has caused the development of sector-specific regulations. Therefore, readily available information about hazardous properties of chemicals and recommended control measures make the use and disposal of chemicals to be managed safely. Globally Harmonized System of Classification and Labelling of Chemicals
explains and classifies hazards related to a chemical product.
(d)
Interpretation:
Among acetylsalicylic acid, acetic acid, phosphoric acid, and acid anhydride the compounds that are used to be handled in fume hood should be determined.
Concept introduction:
A fume hood is an enclosed device except for the necessary exhaust purposes that are on three sides, top and bottom. It is designed to draw air inward by means of mechanical ventilation and also used to control the exposure to hazardous substances.
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Chapter 1 Solutions
Laboratory Techniques in Organic Chemistry
- 1. Arrange the test samples in order of increasing acidity? Explain briefly. -Ethanoic acid, Butanoic acid, Benzoic acid, Salicylic acid 2. Arrange the test samples in order of increasing reactivity with sodium bicarbonate? Explain briefly -Ethanoic acid, Butanoic acid, Benzoic acid 3. Arrange the test samples in order of increasing solubility in water? Explain briefly. -Ethylamine, Diethylamine, Aniline 4. Arrange the test samples in order of increasing basicity? Explain briefly. -NaOH, Ethylamine, Anilinearrow_forwardpropanoic acid + methanol (in concentrated sulfuric acid)arrow_forwardWrite the chemical equation for the acid dissociation of acetaminophen, C8H9O2N. Write the Ka expression for the acid dissociation of acetaminophen.arrow_forward
- arrange the following compound types in order of decreasing ease of hydrolysis: acid halides, acid anhydrides, esters, and amides. Use > in your arrangement.arrow_forwardThe amines are organic weak bases which are nitrogen-containing. In the early days of organic chemistry, basic amines derived from natural sources were known as “vegetable alkali”, but they are now referred to as alkaloids. The study of alkaloids provided much of the growth of organic chemistry, phytochemistry and natural products chemistry. It remains a fascinating area of research. Please search for one naturally occurring alkaloid and provide the following: Name of the alkaloid and show its structure. Identify using arrows the polar bonds in the structure Species from where it was isolated What was the use of this alkaloid in plants (if any)? What are the pharmacological, medicinal, or environmental uses or applications of this alkaloid (if any)?arrow_forwardb) Compounds in which the –OH of the carboxyl group is replaced by certain other groups are called carboxylic acid derivatives. The most important of which are acyl halides, acid anhydrides, esters and amides. Discuss the relationship between carboxylic acid, acid chloride and acid anhydridearrow_forward
- Aldehydes and Ketones: list to select from: Formalin(formaldehyde), n-butyraldehyde,benzaldehyde,acetone,2-butanone,cyclohexane. predict which will give a positive/negative to Chromic Acid,Iodoform and Tollen's test.arrow_forward( with structural explanation plz )rank the molecules in order of increasing acidity:ethanol,ethylene glycol, acetic acid, 2,4-pentanedione,oxalic acid solidarrow_forwardCompare and explain the acidity of phenol, ethanol, acetic acid. (Using pKa, structures of conjugate base)arrow_forward
- Need help determining the acidic and neutral components in an unknown sample. Have one of the following functional groups: Aldehyde Amine Ketone Alcohol Carboxylic acid Ester Phenol May have: Chlorine Ether Bromine Alkene lodine Alkyne Nitro Aromaticarrow_forwardAfter separating the acidic and neutral compounds in a mixture, how does one recover the neutral compound from the organic solution that it is in? O 1) Treat with HCl until acidic to precipitate the neutral compound as a solid. Heat the solution on a hot plate to evaporate the organic solvent and recover O 2) the neutral compound as a solid. Wave a magic wand and speak the spell of recovery to get the neutral O 3) compound as a solid. You don't need to recover the neutral compound as a soild, toss out the O4) organic solution and clean up the lab.arrow_forward2. Answer Only What reactants are needed to be able to synthesize aspirin? methyl salicylate, acetic acid, sulfuric acid salicylic acid and acetic anhydride only salicylic acid and acetic acid only methyl salicylate, acetic anhydride and sulfuric acid salicyclic acid, acetic anhydride and sulfuric acid —————- Predict the color change if 1% ferric chloride (yellowish solution) is added to a test tube containing a mixture of ethanol and salicylic acid. purple to yellow yellow to dark blue light blue to pink yellow to purple no color change ————————- Refer to the following mixtures: Mixture A: Liquid and solid mixture Mixture B. Liquid mixture whose boiling points are similar. Mixture C. Liquid mixture with high boiling point. Mixture D. Heat sensitive liquid mixture. Which of the following distillation can be applied for Mixture D? vacuum distillation fractional distillation simple distillation none of these —————————- True or False? Phenol does not cause chemical burn…arrow_forward
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