How can ethanol and ethanoic acid be differentiated on the basis of their physical and chemical properties?
How can ethanol and ethanoic acid be differentiated on the basis of their physical and chemical properties?
Solution and Explanation
• Ethanol is a liquid at room temperature with a pleasant odour while ethanoic acid has
vinegar-like smell. The melting point of ethanoic acid is 17°C. This is below room temperature
and hence, it freezes during winters.
• Ethanoic acid reacts with metal carbonates and metal hydrogencarbonates to form salt,
water, and carbon dioxide gas while ethanol does not react with them.
Metal Carbonates/Metal Hydrogencarbonates+Carboxylic acid
\(\downarrow\)
Salt+water+carbondioxide
For example,
2CH3COOH+Na2CO3\(\rightarrow\)2CH3COONa+H2O+CO2
Metal Carbonates/Metal Hydrogencarbonates + Alcohols
\(\downarrow\)
No reaction
For example,
CH3CH2OH+Na2CO3\(\rightarrow\)No reaction
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Top CBSE X Questions
- Read the following source carefully and answer the questions that follow:
Print Comes to India
From 1780, James Augustus Hickey began to edit the Bengal Gazette, a weekly maga zine that described itself as ‘a commercial paper open to all, but influenced by none’. So it was private English enterprise, proud of its independence from colonial influence, that began English printing in India. Hickey published a lot of advertisements, including those that related to the import and sale of slaves. But he also published a lot of gossip about the Company’s senior officials in India. Enraged by this, Governor-General War ren Hastings persecuted Hickey, and encouraged the publication of officially sanctioned newspapers that could counter the flow of information that damaged the image of the colonial government. By the close of the eighteenth century, a number of newspapers and journals appeared in print. There were Indians, too, who began to publish Indian news papers. The first to appear was the weekly Bengal Gazette, brought out by Gangadhar Bhattacharya, who was close to Raja Rammohan Roy. - Read the following source carefully and answer the questions that follow:
Loans from Cooperatives
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Concepts Used:
Allotropes of Carbon
The existence of a chemical element in one or more physical forms happening in the same physical state is called Allotropes or allotropy. Allotropes may show different physical or chemical states turning on the atom arrangement or the number of existent atoms. While carbon and sulfur is the common element presenting allotropy. Carbon can make further allotropes due to its five-membered valency.
Read More: Allotropes of Carbon
Allotropes of Carbon:
Carbon is part of a p-block element.
- The atomic number of carbon = 6
- It belongs to group 14.
- It makes up about 18.5% of the human body by mass.
Carbon has only two types of allotropes, such as;
- Crystalline
- Amorphous
The crystalline form of carbon consists of allotropes like;
- Diamond
- Graphite
- Fullerenes
The amorphous form of carbon consists of allotropes like;
- Coal
- Coke
- Wood charcoal
- Animal charcoal
- Lampblack
- Gas carbon