STD 12 - p -Block elements - ll — NEET STD 11 Science — Question

$[{N_2}{O_4}\,(g)\, \rightleftharpoons \,2N{o_2}(g)]$

At $300\,K$ and $1\,atm$ pressure, the degree of dissociation of $N_2O_4$ is $0.2.$ If one mole of $N_2O_4$ gas is contained in a vessel, then the density of the equilibrium mixture is.......$g/L$

$E_{{A^{3 + }}/A}^o = 1.50\,\,V\,,$    $E_{{B^{2 + }}/B}^o = 0.3\,\,V,$

$E_{{C^{3 + }}/C}^o =  - \,0.74\,\,V,$  $E_{{D^{2 + }}/D}^o =  - \,2.37\,\,V.$

The correct sequence in which the various metals are deposited at the cathode is

$(i)\,\,(CH_3)_2CH-CH_2Br \xrightarrow{{{C_2}{H_5}OH}} (CH_3)_2CH-CH_2OC_2H_5 + HBr$

$(ii)\,\,(CH_3)_2CH-CH_2-Br \xrightarrow{{{C_2}{H_5}{O^- }}} (CH_3)_2CH-CH_2OC_2H_5 + Br^-$

The mechanisms of reaction $(i)$ and $(ii)$ are respectively

Reason : Oxidation takes place at anode and reduction at cathode.