September 2018 1 57 Report

Napisz odpowiednie równiania reakcji (wyrównane stechiometrycznie):

K2CrO4 --> K2Cr2O7

K2Cr2O7 --> K2Cr2O4

K2Cr2O4 --> Cr2(SO4)3

CrCl2 --> CrCl3

CrCl3 --> Cr(OH)3

Cr(OH)3 --> Cr2O3

Cr(OH)3 --> Na3[Cr(OH)6]


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