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¸é åï¼ä¸æ¯NaOHã
a å¸æ¶ååº
Na2CO3+SO2âNa2SO3+CO2 â
Na2SO3+ SO2+H2Oâ2NaHSO3 â¡
2NaOH+SO2âNa2SO3+ H2O â¢
å
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b åçååº
2NaHSO3+Ca(OH)2âNa2SO3+ CaSO38226;1/2H2O +3/2 H2O â£
Na2SO3+ Ca(OH)2+1/2 H2Oâ2NaOH+ CaSO38226;1/2H2O â¤
å¼â£æ¯åçååºç主è¦ååºå¼ï¼å¼â¤æ¯åç液é«pHå¼æ¶çåçååºã
c æ°§åååº
2Na2SO3+O2â2 Na2SO4 â¥
CaSO38226;1/2H2O+1/2O2+3/2 H2OâCaSO48226;2H2O â¦
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