Question
Write note on trichloromethane (Chloroform)
✓
Answer
→ Chloroform is employed as a solvent for fats, alkaloids, iodine and other substances.
→ The major use of chloroform today is in the production of the freon refrigerant R-22.
→ It was once used as a general anaesthetic in surgery but has been replaced by less toxic, safer anaesthetics, such as ether.
→ As might be expected from its use as an anaesthetic, inhaling chloroform depresses the central nervous system.
→ Breathing about 900 parts of chloroform per million parts of air (900 parts per million) for a short time can cause dizziness, fatigue and headache.
→ Chronic chloroform exposure may cause damage to the liver (where chloroform is metabolised to phosgene) and to the kidneys, and some people develop sores when the skin is immersed in chloroform.
→ Chloroform is slowly oxidised by air in the presence of light to an extremely poisonous gas,carbonyl chloride, also known as phosgene.
→ It is therefore stored in closed dark coloured bottles completely filled so that air is kept out.
$2 CHCl _3+ O _2 \xrightarrow{\text { light }} \underset{\text { Phosgene }}{2 COCI _2}+2 HCI$
→ The major use of chloroform today is in the production of the freon refrigerant R-22.
→ It was once used as a general anaesthetic in surgery but has been replaced by less toxic, safer anaesthetics, such as ether.
→ As might be expected from its use as an anaesthetic, inhaling chloroform depresses the central nervous system.
→ Breathing about 900 parts of chloroform per million parts of air (900 parts per million) for a short time can cause dizziness, fatigue and headache.
→ Chronic chloroform exposure may cause damage to the liver (where chloroform is metabolised to phosgene) and to the kidneys, and some people develop sores when the skin is immersed in chloroform.
→ Chloroform is slowly oxidised by air in the presence of light to an extremely poisonous gas,carbonyl chloride, also known as phosgene.
→ It is therefore stored in closed dark coloured bottles completely filled so that air is kept out.
$2 CHCl _3+ O _2 \xrightarrow{\text { light }} \underset{\text { Phosgene }}{2 COCI _2}+2 HCI$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What happens when
i. a pressure greater than osmotic pressure is applied on the solution side separated from solvent by a semipermeable membrane?
ii. acetone is added to pure ethanol?
i. a pressure greater than osmotic pressure is applied on the solution side separated from solvent by a semipermeable membrane?
ii. acetone is added to pure ethanol?
What are amino acid compounds? Explain the nomenclature of amino acid compounds.
A galvanic cell has electrical potential of 1.1V. If an opposing potential of 1.1V is applied to this cell, what will happen to the cell reaction and current flowing through the cell?
a. Find the value of van't Hoff factor for acetic acid in benzene as per the given equation:
$2 CH _3 COOH \leftrightharpoons\left( CH _3 COOH \right)_2$, assuming its complete association.
b. Osmotic pressure of a solution containing 3.5 g of dissolved protein in 0.05 L of a solution is 0.035 atm at 310 K . Calculate the molar mass of the protein.$\left( R =0.0821 L atm K ^{-1} mol^{-1}\right)$
→$2 CH _3 COOH \leftrightharpoons\left( CH _3 COOH \right)_2$, assuming its complete association.
b. Osmotic pressure of a solution containing 3.5 g of dissolved protein in 0.05 L of a solution is 0.035 atm at 310 K . Calculate the molar mass of the protein.$\left( R =0.0821 L atm K ^{-1} mol^{-1}\right)$
Give the resonance structure of arenediazonium ion.
Name the members of the lanthanoid series which exhibit $+4$ oxidation states and those which exhibit $+2$ oxidation states. Try to correlate this type of behaviour with the electronic configurations of these elements.
→
In the above reaction sequence, write the chemical formula and IUPAC name of X and Y.
Explain with equations, the reactions to obtain hydrocarbons by reduction of aldehydes and ketones. Write a note on Clemmensen and Wolff$-$ Kishner reduction.
→For any solvent, the molal gradient constants value is certain. Why?
Explain the difference between reucing and non-reducing sugars with examples.