An organic compound 'A' is widely used s a preservative in pickels and has a molecular formula `C_2H_4O_2`. The compound reacts with ethanol to form a sweet smelling compound 'B'
Write the chemical equation for its reaction with ethanol to form compound 'B'.

An optically active compound having molecular formula C_7H_15Br reacts with KOH to give a racemic mixture of products. Write the mechanism involved for this reaction.

Ethane (C_2H_6) burns in oxygen to form carbon dioxide and water. Write balanced chemical equation for this reaction.

Write the empirical formula of the following compound having the molecular formula C2H2.

Write chemical equations for the following reactions : Reaction of ethanolic NH_3 with C_2H_5Cl .

A compound which is prepared from gypsum has the property of hardening when mixed with a proper quantity of water. Identify the compound. Write the chemical equation for its preparation. For what purpose is its used in hospitals?

Write the empirical formula of the compounds having the molecular formulas : B2H6

Identify the compound of calcium which is yellowish white powder and is used for disinfecting drinking water. Write its chemical name and formula. How is it manufactured? Write the chemical equation for the reaction involved. Also list two other uses of the compound.

Write the names of the following compounds : (NH_4)_2S