MCQ
Which of the following double salt does not exist ?
- ✓$(NH_4)_2SO_4.CuSO_4 . 6H_2O$
- B$(NH4)_2SO_4. FeSO_4. 6H_2O$
- C$(NH_4) _2SO_4 . ZnSO_4. 6H_2O$
- D$(NH_4)_2SO_4. NiSO_4. 6H_2O$
The double salt $\left( NH _4\right)_2 SO _4 \cdot ZnSO _4 \cdot 6 H _2 O$ does not exist.
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| Column $-I$ | Column $-II$ | ||
| $(a)$ | $[Pt(NH_3)_3Cl]Br$ | $(P)$ | Coordination isomerism |
| $(b)$ | $[Cr(NH_3)_5(NCS)]^{+2}$ | $(Q)$ | Ionisation isomerism |
| $(c)$ | $[Co(H_2O)_6]Cl_3$ | $(R)$ | Linkase isomerism |
| $(d)$ | $[PtCl_4] [Pt(NH_3)_4]$ | $(S)$ | Hydrated isomerism |
$F{e^{ + 2 }} + 2{e^ - }\, \to \,Fe\,;\,\,\,\,{E^o} = - 0.440\,V$
$F{e^{ + 3 }} + 3{e^ - }\, \to \,Fe\,;\,\,\,\,{E^o} = - 0.036\,V$The standard electrode potential $({E^o})$ for$F{e^{ + 3 }} + {e^ - } \to \,F{e^{ + 2 }}$ is .............. $\mathrm{V}$