Identify the overall oxidation reaction that | vedclass

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(C) When the lead storage cell provides current (i.e.,during discharge),spongy lead $(Pb)$ is oxidized to $Pb^{2+}$ ions at the anode. The $Pb^{2+}$ i

Vedclass · Accepted Answer

$Pb_{(s)} + SO_{4(aq)}^{2-} \longrightarrow PbSO_{4(s)} + 2 e^{-}$

Vedclass · Answer

(C) When the lead storage cell provides current (i.e.,during discharge),spongy lead $(Pb)$ is oxidized to $Pb^{2+}$ ions at the anode. The $Pb^{2+}$ ions so formed combine with $SO_4^{2-}$ ions from $H_2SO_4$ to form insoluble $PbSO_4$. The overall oxidation half-reaction is the sum of these two processes.$Pb_{(s)} \longrightarrow Pb_{(aq)}^{2+} + 2 e^{-}$(Oxidation)$Pb_{(aq)}^{2+} + SO_{4(aq)}^{2-} \longrightarrow PbSO_{4(s)}$(Precipitation)$Pb_{(s)} + SO_{4(aq)}^{2-} \longrightarrow PbSO_{4(s)} + 2 e^{-}$(Overall oxidation)

List – $I$	List – $II$
$(a)$ Henry’s law	$(i)$ $p_1 = x_1 p_1^o$
$(b)$ Raoult’s law	(ii) $p = K_H x$
$(c)$ First law of thermodynamics	(iii) $\Lambda_m^o = \nu_+ \lambda_+^o + \nu_- \lambda_-^o$
$(d)$ Kohlrausch’s law	(iv) $\Delta U = q + w$

Identify the overall oxidation reaction that occurs in a lead storage cell during discharge.

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