15
Attempt either (a) or (b) :
OR
(b) (i) Name the following compounds :
(ii) Name the reaction which is commonly used in the conversion of vegetable oils to fats.
(iii) Why is the melting point of $\ce{C4H10}$ higher than $\ce{C3H8}$ ?
(iv) What happens when a piece of sodium is dropped into ethanol ?
(v) Write the products in the following reaction :
$\ce{CH3COOC2H5} + \ce{NaOH} \rightarrow$
OR
(b) (i) Name the following compounds :
| (I) $\ce{CH3-C-CH3 \atop \ | \text{O}}$ |
|---|---|
| (II) $\ce{H-C-C=C-H \atop \ | \text{H}}$ |
(iii) Why is the melting point of $\ce{C4H10}$ higher than $\ce{C3H8}$ ?
(iv) What happens when a piece of sodium is dropped into ethanol ?
(v) Write the products in the following reaction :
$\ce{CH3COOC2H5} + \ce{NaOH} \rightarrow$
Show SolutionHide Solution↓
(b) (i) (I) Propanone/acetone
(
frac{1}{2})
(II) Propyne
(
frac{1}{2})
(ii) Hydrogenation/addition reaction.
(1)
(iii) $\ce{C4H10}$ will have higher melting point, as it has a higher molecular mass than $\ce{C3H8}$ and Melting point increases with the increase in molecular mass.
(1)
(iv) Sodium ethoxide ($\ce{C2H5ONa}$) is formed and hydrogen gas is evolved / $\ce{2Na + 2CH3CH2OH -> 2CH3CH2O-Na+ + H2}$ (balancing may be ignored)
(1)
(v) $\ce{CH3COON C2H5 + NaOH -> CH3COONa + C2H5OH}$
(
frac{1}{2}+
frac{1}{2})
(
frac{1}{2})
(II) Propyne
(
frac{1}{2})
(ii) Hydrogenation/addition reaction.
(1)
(iii) $\ce{C4H10}$ will have higher melting point, as it has a higher molecular mass than $\ce{C3H8}$ and Melting point increases with the increase in molecular mass.
(1)
(iv) Sodium ethoxide ($\ce{C2H5ONa}$) is formed and hydrogen gas is evolved / $\ce{2Na + 2CH3CH2OH -> 2CH3CH2O-Na+ + H2}$ (balancing may be ignored)
(1)
(v) $\ce{CH3COON C2H5 + NaOH -> CH3COONa + C2H5OH}$
(
frac{1}{2}+
frac{1}{2})