Cr2(SO4)3-->Cr(OH)3--->Cr2O3--->Cr--->Cr2S3

Question

Cr2(SO4)3-->Cr(OH)3--->Cr2O3--->Cr--->Cr2S3

Answer 1

Cr2(SO4)3+6KOH=2Cr(OH)3+3K2SO4

2Cr(OH)3----.(нагреваем)=Cr2O3+3H2O

Cr2O3+3H2=2Cr+3H2O

2Cr+3S=Cr2S3