MCQ
Select the correct statement about the given complex


- AIt has four ions in aqueous solution
- BPrimary valency of cobalt is six.
- ✓It give one mole of $AgCl$ ppt on reaction with excess of $AgNO_3$.
- DIt has one primary valency

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${A_2}(g) + 4{B_2}(g) \rightleftharpoons 2A{B_4}(g)\,;\,\Delta H < 0$
the formation of $AB_4(g)$ will be favoured by

At $300 \,K$, ozone is fifty percent dissociated. The standard free energy change at this temperature and $1\, atm$ pressure is $(-)$ $........\,J\, mol ^{-1}$ (Nearest integer)
[Given: $\ln 1.35=0.3$ and $R =8.3 J K ^{-1} mol ^{-1}$ ]
