Question

Осуществите цепочку превращений Na2SO3—SO2—SO3—H2SO4—ZnSO4—BaSO4

Answer 1

Na2SO3-->Na2O+SO2
2SO2+O2=2SO3
SO3+H2O=H2SO4
H2SO4+ZnCl2-->2HCL+ZnSO4
ZnSO4+BaCL2-->ZnCL2+BaSO4

Answer 2

Цепочка превращений Na2SO3—SO2—SO3—H2SO4—ZnSO4—BaSO4

1. Na2SO3 to SO2: - The conversion of Na2SO3 to SO2 can be achieved through various chemical reactions. One example is the reaction of Na2SO3 with HCl: - Na2SO3 + 2 HCl → 2 NaCl + SO2 + H2O [[7 #1]].

2. SO2 to SO3: - The conversion of SO2 to SO3 typically involves the reaction with oxygen in the presence of a catalyst. One common method is the contact process, where SO2 is oxidized to SO3 in the presence of V2O5 as a catalyst: - 2 SO2 + O2 → 2 SO3 [[10 #1]].

3. SO3 to H2SO4: - The conversion of SO3 to H2SO4 involves the addition of water to SO3. This reaction is highly exothermic and typically requires careful control due to the heat released: - SO3 + H2O → H2SO4 [[1 #1]].

4. H2SO4 to ZnSO4: - The conversion of H2SO4 to ZnSO4 can be achieved through a displacement reaction, where zinc (Zn) displaces hydrogen from sulfuric acid to form zinc sulfate: - Zn + H2SO4 → ZnSO4 + H2 [[6 #1]].

5. ZnSO4 to BaSO4: - The conversion of ZnSO4 to BaSO4 can be achieved through a precipitation reaction by adding barium chloride (BaCl2) to a solution of zinc sulfate: - BaCl2 + ZnSO4 → BaSO4 + ZnCl2 [[8 #1]].

This sequence of reactions demonstrates the transformation of sodium sulfite (Na2SO3) into barium sulfate (BaSO4) through a series of chemical reactions involving sulfur dioxide (SO2), sulfur trioxide (SO3), sulfuric acid (H2SO4), zinc sulfate (ZnSO4), and barium sulfate (BaSO4).