MCQ
In Williamson's synthesis, ethoxyethane is prepared by
- APassing ethanol over heated alumina
- ✓Sodium ethoxide with ethyl cloride
- CEthyl alcohol with sulphuric acid
- DEthyl iodide and dry silver oxide
$C{H_3} - C{H_2} - ONa + Cl - C{H_2} - C{H_3} \to $
$C{H_3} - C{H_2} - O - C{H_2} - C{H_3}$
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$CaCO _{3}( s ) \rightarrow CaO ( s )+ CO _{2}( g )$ the values of $\Delta H ^{\circ}$ and $\Delta S^{\circ}$ are $+179.1 kJ mol ^{-1}$ and $160.2\,J / K$ respectively at $298 \,K$ and $1 \,bar$. Assuming that $\Delta H ^{\circ}$ and $\Delta S ^{\circ}$ do not change with temperature, temperature above which conversion of lime-stone to lime will be spontaneous is ........... $K$
| $p ( mm Hg )$ | $50$ | $100$ | $200$ | $400$ |
| Relative $t _{1 / 2}( s )$ | $4$ | $2$ | $1$ | $0.5$ |
The order of the reaction is
