Solution of task 238 of Chemistry Book Shimanovich 2003
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238. Reactions are expressed by schemes:
H2SO3 + HClO3-H2SO4 + HCl
FeSO4 + K2Cr2O7 + H2SO4-Fe2 (SO4) 3 + Cr2 (SO4) 3 + K2SO4 + H2O
Compose electronic equations. Arrange the coefficients in the reaction equations. For each reaction, indicate which substance is an oxidizer, which is a reducing agent; What substance is oxidized, what is recovered.
H2SO3 + HClO3-H2SO4 + HCl
FeSO4 + K2Cr2O7 + H2SO4-Fe2 (SO4) 3 + Cr2 (SO4) 3 + K2SO4 + H2O
Compose electronic equations. Arrange the coefficients in the reaction equations. For each reaction, indicate which substance is an oxidizer, which is a reducing agent; What substance is oxidized, what is recovered.