MCQ
On adding $KI $ to a solution of copper sulphate
- ACupric oxide is precipitated
- BMetallic copper is precipitated
- ✓Cuprous iodide is precipitated with liberation of iodine
- DNo change occurs
$2KI + CuS{O_4}\, \to \,Cu{I_2} + {K_2}S{O_4} + {I_2}$
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| Column$-I$ | Column$-II$ |
| $(a)$ $\mathrm{XeF}_{4}$ | $(i)$ pyramidal |
| $(b)$ $\mathrm{XeF}_{6} $ | $(ii)$ square planar |
| $(c)$ $\mathrm{XeOF}_{4}$ | $(iii)$ distorted octahedral |
| $(d)$ $\mathrm{XeO}_{3} $ | $(iv)$ square pyramidal |
code : $(a) \quad (b)\quad (c) \quad (d)$
${E^0}_{F{e^{3 + }}/F{e^{2 + }}}$ $=$ $ + 0.77\;V$
${E^0}_{S{n^{2 + }}/Sn} = - 0.14\;V$ Under standard conditions the potential for the reaction $S{n_{(s)}} + 2F{e^{3 + }}(aq) \to 2F{e^{2 + }}(sq) + S{n^{2 + }}(aq)$ is ............ $\mathrm{V}$