CrCl3+3 NaOH--->Cr(OH)3↓+3 NaCl
Cr3+ +3 Cl- +3 Na+ +3 OH- --->Cr(OH)3↓ +3 Na+ +3 OH-
Cr3+ +3 OH- --->Cr(OH)3↓
Fe(NO3)2+2 KOH--->Fe(OH)2↓+2 KNO3
Fe2+ +2 NO3- +2 K+ +2 OH- --->Fe(OH)2↓ +2 K+ +2 NO3-
Fe2+ +2 OH- --->Fe(OH)2↓
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CrCl3+3 NaOH--->Cr(OH)3↓+3 NaCl
Cr3+ +3 Cl- +3 Na+ +3 OH- --->Cr(OH)3↓ +3 Na+ +3 OH-
Cr3+ +3 OH- --->Cr(OH)3↓
Fe(NO3)2+2 KOH--->Fe(OH)2↓+2 KNO3
Fe2+ +2 NO3- +2 K+ +2 OH- --->Fe(OH)2↓ +2 K+ +2 NO3-
Fe2+ +2 OH- --->Fe(OH)2↓