MCQ
Empirical formula of a hydrocarbon containing $80\%$ carbon and $20\%$ hydrogen is
- A$CH$
- B$C{H_2}$
- ✓$C{H_3}$
- D$C{H_4}$
| Elements | No.of moles | Simple ratio |
|---|---|---|
| $C = 80\%$ | $80/12 = 6.66$ | $1$ |
| $H = 20\%$ | $20/1 = 20$ | $3$ |
ence, Empirical Formula = $C{H_3}$.
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$PCl _{5}( g ) \rightleftharpoons PCl _{3}( g )+ Cl _{2}( g )$
$5$ moles of $PCl _{5}$ are placed in a $200$ $litre$ vessel which contains $2\, moles$ of $N _{2}$ and is maintained at $600 \,K$. The equilibrium pressure is $2.46 \,atm$. The equilibrium constant $K _{ p }$ for the dissociation of $PCl _{5}$ is $......\,\times 10^{-3}$. (nearest integer)
(Given: $R =0.082\, L \,atm \,K ^{-1} \,mol ^{-1}$ : Assume ideal gas behaviour)
| List$I$ | List$II$ |
| $A.$ Cobalt catalyst | $I.$ $\left( H _2+ Cl _2\right)$ production |
| $B.$ Syngas | $II.$ Water gas production |
| $C.$ Nickel catalyst | $III.$ Coal gasification |
| $D.$ Brine solution | $IV.$ Methanol production |
Choose the correct answer from the options given below :-