Science
A saturated organic compound 'A' belongs to the homologous series of alcohols.
On heating 'A' with concentrated sulphuric acid at 443 K, it forms an unsaturated compound 'B' with molecular mass 28 u.
The compound 'B' on addition of one mole of hydrogen in the presence of Nickel, changes to a saturated hydrocarbon 'C'.
(i) Identify A, B and C.
(ii) Write the chemical equations showing the conversion of A into B.
(iii) What happens when compound C undergoes combustion ?
(iv) State one industrial application of hydrogenation reaction.
(v) Name the products formed when compound A reacts with sodium.
Organic Chemistry
471 Likes
Answer
(i) Compounds A, B and C are:
A → Ethanol
B → Ethene
C → Ethane
C2H5OH CH2=CH2
CH2=CH2 + H2 CH3-CH3
(ii) C2H5OH CH2=CH2
(iii) When ethane undergoes combustion, carbon dioxide is produced along with water and heat.
2C2H6 + 7O2 ⟶ 4CO2 + 6H2O + Heat
(iv) In industry, hydrogenation reaction is used for preparing vegetable ghee from vegetable oils
(v) Sodium ethoxide and Hydrogen
2Na + 2C2H5OH ⟶ 2C2H5ONa + H2
Answered By
193 Likes
Related Questions
(i) Why does a kitchen garden called an artificial ecosystem while a forest is considered to be a natural ecosystem ?
(ii) While designing an artificial ecosystem at home, write any two things to be kept in mind to convert it into a self-sustaining system. Give reason to justify your answer.
(i) Construct a food chain of four trophic levels comprising the following :
Hawk, snake, plants, rat.
(ii) 20,000 J of energy was transferred by the producers to the organism of second trophic level. Calculate the amount of energy that will be transferred by organisms of the third trophic level to the organisms of the fourth trophic level.
(i) With the help of a diagram, show the formation of micelles, when soap is applied on oily dirt.
(ii) Take two test tubes X and Y with 10 mL of hard water in each.
In test tube 'X', add few drops of soap solution and in test tube 'Y' add a few drops of detergent solution. Shake both the test tubes for the same period.
(1) In which test tube the formation of foam will be more ? Why ?
(2) In which test tube is a curdy solid formed ? Why ?
(a) Name the parts of a bisexual flower that are not directly involved in reproduction.
(b) Differentiate between self pollination and cross pollination. List any two significance of pollination.
(c) What is the fate of ovules and ovary after fertilization in a flower?