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A first-hand investigation to produce an ester is to be carried out in a school laboratory, using an alkanol, an alkanoic acid and a suitable catalyst - HSC - SSCE Chemistry - Question 26 - 2060 - Paper 1
Question 26
A first-hand investigation to produce an ester is to be carried out in a school laboratory, using an alkanol, an alkanoic acid and a suitable catalyst. (a) Name an ... show full transcript
Worked Solution & Example Answer:A first-hand investigation to produce an ester is to be carried out in a school laboratory, using an alkanol, an alkanoic acid and a suitable catalyst - HSC - SSCE Chemistry - Question 26 - 2060 - Paper 1
Step 1
Step 2
Describe how potential hazards associated with the three chemicals required for this investigation could be addressed.
Answer
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Methanol (alkanol): Methanol is flammable and toxic. When using methanol, it is essential to keep it away from any open flames. A hot plate or water bath should be used instead of direct heat. Additionally, proper eye and skin protection should be worn, including safety goggles and gloves, to prevent skin contact.
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Butanoic Acid (alkanoic acid): Concentrated butanoic acid can cause burns when it comes into contact with the skin or eyes. To address this risk, one should use protective gloves and goggles when handling the acid. Ensure that work is conducted in a well-ventilated area, and use a fume cupboard if available to minimize inhalation exposure.
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Catalyst (e.g., sulfuric acid): Concentrated sulfuric acid is highly corrosive and can produce harmful fumes. Appropriate handling measures include wearing gloves, goggles, and a lab coat. Working under a fume hood is recommended to prevent inhalation of vapors. Additionally, small quantities should be used to minimize the risk of exposure in case of spills.