Green Chemistry for sustainable development
- What is green chemistry and how is atom economy used to compare conventional and green routes? In one line Green chemistry is the design of chemical products and processes that reduce or eliminate the use and generation of hazardous su... 1
- How does the green biotechnological synthesis of indigo dye compare with the conventional chemical route? In one line Conventionally, indigo is made from aniline, formaldehyde and hydrogen cyanide using strong alkali at high temperature, while th... 1
- How is adipic acid made conventionally and by the green route, and why is the green route better? In one line Adipic acid is conventionally made from benzene via cyclohexanol/cyclohexanone oxidation with nitric acid, which releases the gr... 1
- How does the green synthesis of carbaryl avoid methyl isocyanate, the chemical behind the Bhopal tragedy? In one line Conventionally, the insecticide carbaryl is made by reacting 1-naphthol with methyl isocyanate (MIC), whereas the greener route... 1
- What are supercritical fluids like supercritical CO2, and why are they used as green solvents? In one line A supercritical fluid is a substance above its critical temperature and critical pressure, where it has liquid-like density (dis... 1
- What are ionic liquids and why are they called green, designer solvents? In one line Ionic liquids are salts that are liquid below 100 °C (many at room temperature), made of bulky organic cations and inorganic or... 1
- How is biodiesel synthesised by transesterification and what are its advantages as a green fuel? In one line Biodiesel is a mixture of fatty acid methyl (or ethyl) esters made by transesterification of vegetable oils or animal fats with... 1
- How is ethanol produced by fermentation and why is it considered a green fuel? In one line Fuel ethanol is produced by yeast fermentation of sugars from molasses, sugarcane juice, grains or biomass, followed by distilla... 1
- What is supercritical CO2 and how does it differ from liquid and gaseous CO2. Supercritical CO₂ (scCO₂) is CO₂ held above its critical temperature (T_c = 31.1 °C) and critical pressure (P_c = 72.8 atm ≈ 7.38 MPa). Abov... 1
- Write an informative note on biodiesel. Biodiesel is a mixture of mono-alkyl (methyl or ethyl) esters of long-chain fatty acids. It is made from vegetable oils (jatropha, karanja,... 1
- Explain synthesis of Adipic acid by traditional and green pathway. Also write the principle of green chemistry involved in this reaction. Conventional (traditional) route C₆H₆ xrightarrow[Ni / Pt]3H₂ undersetcyclohexanemathrmC₆H₁₂ xrightarrow[Co catalyst]O₂\ (air) undersetcyclo... 1
- Discuss super critical solvents with its applications. A supercritical fluid (SCF) is a substance held above its critical temperature (T_c) and critical pressure (P_c). There it exists as a singl... 1
- Write the conventional and green methods for the synthesis of adipic acid. Conventional (traditional) route C₆H₆ xrightarrow[Ni / Pt]3H₂ undersetcyclohexanemathrmC₆H₁₂ xrightarrow[Co catalyst]O₂\ (air) undersetcyclo... 1
- Write about the synthesis and advantages of biodiesel. Biodiesel is a mixture of mono-alkyl (methyl or ethyl) esters of long-chain fatty acids. It is made from vegetable oils (jatropha, karanja,... 1
- Write are the principles of Green Chemistry. The 12 principles of Green Chemistry (Anastas and Warner): Prevention: it is better to prevent waste than to treat or clean it up after it i... 1
- What do you mean by green solvent, explain it with suitable example. Green solvents are environmentally benign solvents that replace volatile, toxic and flammable organic solvents (benzene, CCl₄, CHCl₃). They... 1
- Explain synthesis of Indigo dye by traditional way and by green pathway. Traditional (conventional) synthesis – Heumann–Pfleger process: undersetanilineC₆H₅NH₂ + HCHO + HCN → C₆H₅NHCH₂CN xrightarrowhydrolysis unde... 1