Cr2(SO4)3-->Cr(OH)3--->Cr2O3--->Cr--->Cr2S3
Cr2(SO4)3+6KOH=2Cr(OH)3+3K2SO4
2Cr(OH)3----.(нагреваем)=Cr2O3+3H2O
Cr2O3+3H2=2Cr+3H2O
2Cr+3S=Cr2S3
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Verified answer
Cr2(SO4)3+6KOH=2Cr(OH)3+3K2SO4
2Cr(OH)3----.(нагреваем)=Cr2O3+3H2O
Cr2O3+3H2=2Cr+3H2O
2Cr+3S=Cr2S3