硫化铵与盐酸反应:
1.盐酸少量:
(NH4)2S + HCl = NH4HS + NH4Cl
2.盐酸过量:
(1) :(NH4)2S + HCl = NH4HS + NH4Cl
(2) :NH4HS + HCl = NH4Cl + H2S↑
盐酸过量时总反应:(NH4)2S + 2HCl = 2NH4Cl + H2S↑
硫化铵与氢氧化钠的反应:
1.少量氢氧化钠,不加热:
化学方程式:(NH4)2S + 2NaOH = Na2S + 2NH3•H2O
离子方程式:NH4+ + OH- = NH3•H2O
2.较多氢氧化钠或过量氢氧化钠,加热:
化学方程式:(NH4)2S + 2NaOH =加热= Na2S + NH3↑ + H2O
离子方程式:NH4+ + OH- =加热= NH3↑ + H2O
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