Ответ: В) 1,4
[tex]\Large \boldsymbol {} \rm 1) ~CuSO_4 + BaCl_2 == CuCl_2 + BaSO_4 \downarrow \\\\Cu^{+2}+SO_4^{-2}+Ba^{+2}+2Cl^- == Cu^{+2} + 2Cl^- + BaSO_4 \downarrow\\\\Ba^{+2}+SO_4^{-2} = BaSO_4 \downarrow\\\\\\\sf 4)~AgNO_3 + KCl == KNO_3 + AgCl \downarrow\\\\Ag^+ + NO_3^- + K^+ + Cl^- == K^+ + NO_3^- + AgCl \downarrow\\\\Ag^+ + Cl^- = AgCl \downarrow[/tex]
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Ответ: В) 1,4
[tex]\Large \boldsymbol {} \rm 1) ~CuSO_4 + BaCl_2 == CuCl_2 + BaSO_4 \downarrow \\\\Cu^{+2}+SO_4^{-2}+Ba^{+2}+2Cl^- == Cu^{+2} + 2Cl^- + BaSO_4 \downarrow\\\\Ba^{+2}+SO_4^{-2} = BaSO_4 \downarrow\\\\\\\sf 4)~AgNO_3 + KCl == KNO_3 + AgCl \downarrow\\\\Ag^+ + NO_3^- + K^+ + Cl^- == K^+ + NO_3^- + AgCl \downarrow\\\\Ag^+ + Cl^- = AgCl \downarrow[/tex]