MCQ
The number of water molecules is maximum in
- A$1.8\ gram$ of water
- B$18\ gram$ of water
- ✓$18\ moles$ of water
- D$18$ molecules of water.
$\ln 18 \;\mathrm{g}=1 \mathrm{moles}$
$1\; mole$ contain $6.022 \times 10^{23}$ molecules of water
so $18\; moles$ contain maximum number of molecules
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$A_2(g) + B_2(g) \rightleftharpoons C_2(g) + D_2(g)$
If we take $1$ mole of each of the four gases in a $10$ litre container, what would be equilibrium concentration of $A_2(g)$ ?
| Observation | $[A]$ | $[B]$ | Rate of reaction |
| $1$ | $0.1$ | $0.1$ | $2\times10^{-3}\, mol\, L^{-1}\,sec^{-1}$ |
| $2$ | $0.2$ | $0.1$ | $0.4\times10^{-2}\, mol\, L^{-1}\,sec^{-1}$ |
| $3$ | $0.1$ | $0.2$ | $1.4\times10^{-2}\, mol\, L^{-1}\,sec^{-1}$ |