MCQ
$\text{VA}$ group elements are known as:
- AHalogens.
- BNormal elements.
- CChalcogens.
- ✓Pnicogens.
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$A(g)\,\xrightarrow{{{K_1}\, = \,2\, \times \,{{10}^{ - 3}}\,\,{S^{ - 1}}}}2B\,(g)$
$A(g)\,\xrightarrow{{{K_2}\, = \,1\, \times \,{{10}^{ - 3}}\,\,{S^{ - 1}}}}C\,(g)$
$A.$ $E _{\text {cell }}$ is an intensive parameter.
$B.$ A negative $E^{\Theta}$ means that the redox couple is a stronger reducing agent than the $H ^{+} / H _2$ couple.
$C.$ The amount of electricity required for oxidation or reduction depends on the stoichiometry of the electrode reaction.
$D.$ The amount of chemical reaction which occurs at any electrode during electrolysis by a current is proportional to the quantity of electricity passed through the electrolyte.
$CHC{l_3}\,\xrightarrow[{Zn/HCl\,\,(alc.)}]{{ +\, 2H}}$
$CHC{l_3}\,\xrightarrow[{Zn/HCl\,\,(aq)}]{{ + \,4H}}$
$CHC{l_3}\,\xrightarrow[{Zn/{H_2}O}]{{ + \,6H}}$