MCQ
In electrolysis of aq.$NiI_2$ solution using $Ni$ electrodes on passing $1$ equivalent charge, mass of cathode Given $[Ni = 59, I = 127]$
- ✓Increase by $29.5$ $gm$
- BIncrease by $59$ $gm$
- CDecreases by $127$ $gm$
- DNone of these
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$(A)$ $\mathrm{O}$ $(B)$ $\mathrm{N}$ $(C)$ Be $(D)$ $\mathrm{F}$ $(E)$ $B$
Choose the correct answer from the options given below :
(Given: Atomic mass of $\mathrm{C}=12, \mathrm{H}=1, \mathrm{O}=16 \mathrm{u}$ )
$I . C H_{3}^{+}$ $II.$ $H_{3} O ^{+}$ $III.$ $N H_{3}$ $I V\,\, C H_{3}^{-}$
$(A)$ Sublimation enthalpy
$(B)$ Ionisation enthalpy
$(C)$ Hydration enthalpy
$(D)$ Electron gain enthalpy
The total number of above properties that affect the reduction potential is ...... .