Methanol is industrially prepared by
- oxidation of $CH_4$ by steam at $900^\circ$
- reduction of HCHO using $LiAIH_4$
- reaction of HCHO with a solution of NaOH
- reduction of CO using $H_2$ and $ZnO-Cr_2O_3$
The Correct Option is D
Solution and Explanation
Methanol is prepared commercially from water gas which is a mixture of carbon monoxide and hydrogen. In this method, water gas is mixed with
its half volume of hydrogen and is passed over heated \(Cr_2 O_3 - Z n O\) catalyst at 673 K under high pressure.
\(\, \, \, \, CO+2H_2 \xrightarrow[673\, K\, high\, pressure]{Cr_2O_3-ZnO} CH_3OH\)
Methanol (CH3OH), also known as methyl alcohol, wood alcohol, or wood spirit, is the most basic of a long sequence of organic compounds known as alcohols. It is made up of a methyl group (CH3)connected to a hydroxyl group (OH). Previously, methanol was obtained through the destructive distillation of wood.
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Concepts Used:
Alcohols
What is Alcohol?
Alcohol is a derivative of water (H2O) that has one, two, or more hydroxyl groups that are attached to a carbon atom of a hydrocarbon chain (an alkyl group). It is one of the most common organic compounds used in sweeteners, fragrances, and medicine.
Read More: Types of Alcohol
Uses of Alcohol:
- Ethanol is the alcohol used in alcoholic drinks. It can be used as an industrial methylated spirit where methanol is used very little in quantity as it can be dangerous.
- It is used as fuel to produce carbon dioxide and water by the process of fermentation. Whereas methanol burns carbon dioxide and water to facilitate combustion.
- Alcohol is an organic compound used as a solvent that is insoluble in water.
- It can be used to lower the level of sugar.
- Alcohol is used as a preservative in laboratories.