Write the name and the structural formula of the compound formed when ethanol is heated at 443 K with excess of conc. $H_{2}S{O}_4$. State the role of conc. $H_{2}S{O}_4$ in this reaction. Write chemical equation for the reaction.

Q. Write the structural formula of ethanol. What happens when it is heated with excess of conc. $H_{2}S{O}_4$ at 443 K? Write the chemical equation for the reaction stating the role of conc. $H_{2}S{O}_4$ in this reaction.

Q. When ethanol reacts with ethanoic acid in the presence of conc. $H_{2}S{O}_4$, a substance with the fruity smell is produced.

Q. (a) What are isomers? Write the structures of two isomers of butane $\left(C_4{H}_{10}\right)$.
(b) Write the name and chemical equation for the reaction that takes place when $5\%$ solution of alkaline $KMn{O}_4$ is added drop by drop to warm ethanol.
(c) Name the product formed when ethanol is heated at $443$K with excess conc. $H_{2}S{O}_4$ and state the role of conc. $H_{2}S{O}_4$ in the reaction.

Q. A compound 'A' with molecular formula $C_2{H}_4$ is obtained by heating compound 'B' with conc. $H_{2}S{O}_4$. 'B' is a powerful fuel. Identify 'A' and 'B' and write the chemical equation involved. Write the role of conc. $H_{2}S{O}_4$ in this reaction?

Q. What happens when (write chemical equation in each case) (a) ethanol is burnt in air? (b) ethanol is heated with excess conc. $H_{2}S{O}_4$ at 443 K? (c) A piece of sodium is dropped into ethanol?