Which of the following reactions are correct with respect to the formation of products? I. 2 NaOH + SO ₂ Na ₂ SO ₄+ H ₂ II. 2 XeF ₄+3 O ₂ ~F ₂ 143 ~K 2 XeO ₃+7 ~F ₂ III. PCl ₅+4 H ₂ O H ₃ PO ₄+5 HCl IV. 2 NaNO ₂+2 HCl 2 NaCl + NO + NO ₂+ H ₂ O

Step-by-step solution

For the given reactions : (I) 2 NaOH + SO ₂ Na ₂ SO ₄+ H ₂ is not correct. The correct reaction is 2 NaOH + SO ₂ Na ₂ SO ₃+ H ₂ O (II) 2 XeF ₄+3 O ₂ ~F ₂ 143 ~K 2 XeO ₃+7 ~F ₂ is also not the correct reaction, the correct reaction is XeF ₄+ O ₂ ~F ₂ 143 ~K XeF ₆+ O ₂ (III) PCl ₅+4 H ₂ O H ₃ PO ₄+5 HCl is the correct reaction, if occurs in two steps, as follows: (i) PCl ₅+ H ₂ O POCl ₃+2 HCl (ii) POCl ₃+3 H ₂ O H ₃ PO ₄+3 HCl Overall reaction, PCl ₅+4 H ₂ O H ₃ PO ₄+5 HCl (IV) 2 NaNO ₂+2 HCl 2 NaCl + NO ₂+ H ₂ O is