17. 弌 亅亟亞 勵仍勵勵亟 礆舒 弍仂亟亳仂亶 丕于舒仍亟 仂仆亞 仂亟仂仂亶仍! 2HCl + Zn = ZnCl 2 + H 2 H 2 SO 4 + FeO = FeSO 4 + H 2 O H 3 PO 4 + 3NaOH = Na 3 PO 4 +3 H 2 O HCl + AgNO 3 = AgCl + HNO 3 H 2 SiO 3 = SiO 2 + H 2 O
18. 亅亅亅亅 X + Me = D + H 2 X + C.O = D + H 2 O X + C = D + H 2 O X + D = X + D X = X.O + H 2 O #弌仍舒亶亟 18
19. 弌 H 2 SO 4 , HCl 亅亟亞 勵仍亳亶仆 亳仄亳亶仆 亳仆亢亳亶亞 舒仍舒仆 于舒仍仆 亞亳亞仍 弍亳亶!
20. 丐丐 H 2 SO 4 + Zn = ZnSO 4 + H 2 H 2 SO 4 + Na 2 O = Na 2 SO 4 + H 2 O H 2 SO 4 + Ca(OH) 2 = CaSO 4 + 2H 2 O H 2 SO 4 + MgCl 2 = MgSO 4 + 2HCl
21. 丱 丱勵亳仍唏唏亞亶 勵亳仍 丱勵亳仍唏唏亞亞勵亶 勵亳仍 1 N 2 O 5 + H 2 O = 2HNO 3 2 AgNO 3 + HCl = AgCl + HNO 3 NaCl + H 2 SO 4 =2HCl + Na 2 SO 4 #弌仍舒亶亟 18