TEMP_CHEMISTRY

1.\[CuSO_4\ and\ excess\ Ba(OH_2)\ :\ Cu^{2+}+SO_4^{2-}+Ba^{2+}+2OH^- \xrightarrow{\quad\quad} Cu(OH)_2\downarrow+BaSO_4\downarrow\\\]
2.\[NaHCO_3\ and\ excess\ NaOH\ : NH_4^++HCO_3^-+2OH^- \xrightarrow{\quad\quad}NH_3\cdot H_2O+CO_3^{2-}+H_2O\]
3.\[drop\ NaOH\ solution\ into\ AgCl\ suspension\ :2AgCl(s)+S^{2-}(aq)\xrightarrow{\quad\quad}Ag_2S(s)+2Cl^-(aq)\]
4.\[add\ excess\ Ca(OH)_2\ into\ NaHCO_3\ :\ HCO_3^-+Ca^{2+}+OH^-\xrightarrow{\quad\quad}CaCO_3\downarrow+H_2O\]
5.\[add\ excess\ NH_3\cdot H_2O\ into\ Al_2(SO_4)_3\ :\ Al^{3+}+3NH_3\cdot H_2O \xrightarrow{\quad\quad}Al(OH)_3\downarrow+3NH_4^+\]
6.\[add\ few\ NaOH\ into\ NH_4HCO_3\ and\ heat\ it\ :\ HCO_3^- +OH^-\xrightarrow{\quad\Delta\quad }CO_3^{2-}+H_2O_2\]
7.\[add\ excess\ SO_2\ into\ cold\ NH_3\cdot H_2O\ :\ SO_2+NH_3\cdot H_2O\xrightarrow{\quad\quad}HSO_3^-+H_2O_2\]
8.\[mix\ Na_2SiO_3\ with\ CH_3COOH\ :\ SiO_3^{2-}+2CH_3COOH\xrightarrow{\quad\quad}H_2SiO_3\downarrow+2CH_3COO^-\]
9.\[mix\ 0.01mol\cdot L^{-1}NH_4Al(SO_4)_2\ with\ 0.02mol\cdot L^{-1}Ba(OH)_2\ :\\ NH_4^++Al^{3+}+2SO_4^{2+}+2Ba^{2+}+4OH^-\xrightarrow{\quad\quad}2BaSO_4\downarrow +Al(OH)_3\downarrow+NH_3\cdot H_2O\]
10.\[CH_3COOH\ react\ with\ CaCO_3\ :\ 2CH_3COOH+CaCO_3\xrightarrow{\quad\quad}Ca^{2+}+2CH_3COO^-+H_2O+CO_2\uparrow\]
11.\[add\ excess\ CO_2\ into\ NaAlO_2\ :\ AlO_2^-+CO_2+2H_2O\xrightarrow{\quad\quad}Al(OH)_3\downarrow+HCO_3^-\]
12.\[add\ Na_2S\ to\ clear\ Hg^2+\ :\ S^{2-}-+Hg^{2+}\xrightarrow{\quad\quad}HgS\downarrow\]