Select the set of incorrect statements:
Statement-I : The pH of neutral water at \(310\,K\) is lower than 7.
Statement-II : The pH of an aqueous solution of \(1\times10^{-8}\,M\) HCl is 8.
Statement-III : The ionization of \(CH_3COONa\) is suppressed in presence of \(CH_3COOH\).
Statement-IV : CuS is precipitated when \(H_2S\) is passed through a solution of \(Cu^{2+}\) and \(Zn^{2+}\) ions in presence of dilute HCl since \(K_{sp}(CuS)\lt K_{sp}(ZnS)\).