Alcohols Phenols And Ethers

Compound Bon reduction with in the presence of Ni gives ethyl alcohol, it means compound B is ethanal or ethanoic acid; because aldehyde or acid on reduction gives primary alcohol. Again, compound B is obtained by the oxidation of A, it means A is ethanol, because primary alcohol on oxidation gives aldehyde or acid.

The density of glycerol is higher than propanol due to extensive intermolecular hydrogen bonding. Glycerol contains three -OH groups while propanol contains only one -OH group.

The correct answer is option (A): Only Ether
(CH₃ONa) + (CH₃)₃CBr → (CH₃)₃COCH₃ +NaBr
This reaction is a nucleophilic substitution reaction. The nucleophilic methoxide ion will attack the tert-butyl bromide and there will be a substitution of the Bromide ion with the methoxide ion. The product will be ether and Sodium Bromide as a by-product. Therefore, only ether will be formed.

The correct answer is option (C): 1.15
2C₂H₅OH +2Na → 2C₂H₅ONa +H₂
From the above reaction, we can see that 1 mole of H₂ is produced by 2 moles of ethanol. At STP, 1 mole of gas occupies 22.4 L
We have to produce 280ml of dihydrogen, the moles of ethanol required for the same are:
2 moles of ethanol22.4L of H₂= 2xmoles of ethanol0.28L of H₂
x= 0.025 moles of ethanol.
The mass of ethanol required can be calculated by using the molar mass:
Molar mass of ethanol = 46.08 g/mol
Mass of ethanol required = 0.025 moles x 46.08 g/mol
= 1.152 g
Therefore, the answer is 1.152 g