MCQ
The rate constant of a reaction depends upon
- AExtent of reaction
- BTime of reaction
- ✓Temperature of the system
- DConcentration of the system
Rate constant $K= A_e^{ - {E_a}/RT}$,
Hence rate constant depends only upon temperature of the system.
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$XeF _4, SF _4, SiF _4 . BF _4^{--}, BrF _4^{-},\left[ Cu \left( NH _3\right)_4\right]^{2+},\left[ FeCl _4\right]^{2-},\left[ CoCl _4\right]^{2-}$ and $\left[ PtCl _4\right]^{2-}$.
Defining shape on the basis of the location of $X$ and $Z$ atoms, the total number of species having a square planar shape is
| Column$-I$ | Column$-II$ |
| $(a)\;Co^{+3}$ | $(i)\;\sqrt{8}\; B.M.$ |
| $(b)\;Cr^{+3}$ | $(ii)\;\sqrt{35}\; B.M.$ |
| $(c)\;Fe^{+3}$ | $(iii)\;\sqrt{3}\; B.M.$ |
| $(d)\;Ni^{+2}$ | $(iv)\;\sqrt{24}\; B.M.$ |
| $(v)\;\sqrt{15}\; B.M.$ |
$(a)\quad (b)\quad (c)\quad (d)$
| Column $I$ | Column $II$ |
| $(A)$ $\mathrm{O}_2^{-} \rightarrow \mathrm{O}_2+\mathrm{O}_2{ }^{2-}$ | $(p)$ redox reaction |
| $(B)$ $\mathrm{CrO}_4{ }^{2-}+\mathrm{H}^{+} \rightarrow$ | $(q)$ one of the products has trigonal planar structure |
| $(C)$ $\mathrm{MnO}_4^{-}+\mathrm{NO}_2^{-}+\mathrm{H}^{+} \rightarrow$ | $(r)$ dimeric bridged tetrahedral metal ion |
| $(D)$ $\mathrm{NO}_3^{-}+\mathrm{H}_2 \mathrm{SO}_4+\mathrm{Fe}^{2+} \rightarrow$ | $(s)$ disproportionation |