Cr2（so4）3为酸式盐吗?

Cr2（so4）3为酸式盐吗? Cr2（SO4）3中的SO4算Cr2的化合价.可以把SO4分开算吗S为-2+4+6这样+4可以使Cr2为+6价选C ——K2Cr2O7+___CH3CH2OH+____→ ——Cr2（SO4）3+___CH3COOH+____ K2Cr2O7和[Cr2（SO4）3]中铬的化合价分别是 （）C+（）K2Cr2O7+()H2SO4-------()CO2+()K2SO4+()Cr2(SO4)+()( ) 配平K2Cr2O7+KI+H2SO4---K2SO4+I2+Cr2(SO4)3+H2O K2Cr2O7+ H2C2O4+ H2SO4 — K2SO4+ Cr2(SO4)3+ CO2+ H2O 配平 k2cr2o7 + ki + h2so4---k2so4+ cr2(so4)3+ i2+ h2o K2Cr2O7+H2SO4+K2SO3=K2SO4+Cr2(SO4)3+H2O K2Cr2O7 + C2H5OH + H2SO4→ ______+ Cr2(SO4)3+ CO2+ H2O C+K2Cr2O7+H2SO4 ------ CO2+Cr2(SO4)3+K2SO4+H2O 配平 H2O2+K2Cr2O7+H2SO4 =Cr2(SO4)3+K2SO4+O2+H2O