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第16页

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$\mathrm {Fe}_2\mathrm {O}_3+3\mathrm {H}_2\mathrm {SO}_4\xlongequal[]{}\mathrm {Fe}_2(\mathrm {SO}_4)_3+3\mathrm {H}_2\mathrm {O}$

$2\mathrm {NaHCO}_3\xlongequal[]{△}\mathrm {Na}_2\mathrm {CO}_3+\mathrm {CO}_2↑+\mathrm {H}_2\mathrm {O}$

$\mathrm {Na}_2\mathrm {CO}_3+2\mathrm {HCl}\xlongequal[]{}2\mathrm {NaCl}+\mathrm {H}_2\mathrm {O}+\mathrm {CO}_2↑$

$\mathrm {Zn+H}_2\mathrm {SO}_4\xlongequal[]{}\mathrm {ZnSO}_4+\mathrm {H}_2↑$

$\mathrm {Na}_2\mathrm {CO}_3+\mathrm {Ca(OH)}_2\xlongequal[]{}\mathrm {CaCO}_3↓+2\mathrm {NaOH}$

$\mathrm {CuSO}_4+\mathrm {Ca(OH)}_2\xlongequal[]{}\mathrm {CaSO}_4+\mathrm {Cu(OH)}_2↓$

$2\mathrm {NaOH}+\mathrm {CO}_2\xlongequal[]{}\mathrm {Na}_2\mathrm {CO}_3+\mathrm {H}_2\mathrm {O}$

$\mathrm {Cu}+2\mathrm {AgNO}_3\xlongequal[]{}\mathrm {2Ag+Cu(NO}_3\mathrm {)}_2$

$\mathrm {2NH}_3\cdot \mathrm {H}_2\mathrm {O}+\mathrm {H}_2\mathrm {SO}_4\xlongequal[]{}(\mathrm {NH}_4)_2\mathrm {SO}_4+2\mathrm {H}_2\mathrm {O}$

$\mathrm {Ca(OH)}_2+\mathrm {H}_2\mathrm {SO}_4\xlongequal[]{}\mathrm {CaSO}_4+2\mathrm {H}_2\mathrm {O}$

$\mathrm {CaO}+\mathrm {H}_2\mathrm {O}\xlongequal[]{}\mathrm {Ca(OH)}_2$

$\mathrm {H}_2\mathrm {SO}_4+\mathrm {Cu}(\mathrm {OH})_2\xlongequal[]{}\mathrm {CuSO}_4+2\mathrm {H}_2\mathrm {O}$

$\mathrm {K}_2\mathrm {CO}_3+2\mathrm {HCl}\xlongequal[]{}2\mathrm {KCl}+\mathrm {H}_2\mathrm {O}+\mathrm {CO}_2↑$

$\mathrm {CuO+2HCl}\xlongequal[]{}\mathrm {CuCl}_2+\mathrm {H}_2\mathrm {O}$