Give a chemical test to distinguish between Ethanol and ethanoic acid.

Give the main uses of –

(i) Methane

(ii) Ethane

(iii) Ethene

(iv) Ethyne

(v) Ethanol

(vi) Ethanoic acid.

Select the correct answer from the choice in brackets.

1. The vapour density of the fifth member of the homologous series of alkanes. [22/36/29]
2. The isomer of pentane which has '1' C atom attached to '4' other C atoms [n-/iso-/neo-] pentane.
3. The IUPAC name of the product of reaction of ethylene with hydrogen bromide, [ethyl bromide/bromoethane/dibromoethane]
4. The IUPAC name of methyl acetylene. [1-butyne/propyne/ethyne]
5. The functional group in ethanoic acid. [aldehydic/carboxyl/hydroxyl]

Give balanced equations for the following conversions:

1. $\text{1,2 dibromoethane} \xrightarrow{\text{A}} \text{Acetylene} \xrightarrow{\text{B}} \text{Silver acetylide}$
2. $\text{Ethanol} \xrightarrow{\text{C}} \text{Ethene} \xleftarrow{\text{D}} \text{Ethyl iodide}$
3. $\text{Bromoethane} \xrightarrow{\text{E}} \text{Ethane} \xleftarrow{\text{F}} \text{Sodium propanoate}$
4. $\text{Sodium ethanoate} \xrightarrow{\text{G}} \text{Marsh gas} \xrightarrow{\text{G}$1} \text{Methanol} \xrightarrow{\text{G}2} \text{Methanal} \xrightarrow{\text{G}_3} \text{Methanoic acid}
5. $\text{Sodium acetate + H}$2 \xleftarrow{\text{H}} \text{Acetic acid} \xrightarrow{\text{H}1} \text{Ethyl ethanoate}