Question

Исправьте ошибки в следующих уравнениях реакций: 1. 2Ca + H2SO4 = CaSO4 + H2 6. HgO = Hg + O2 2. FeCl2 + 3Cl3 = FeCl3 7. 2LiCl + AgNO3 = AgCl + 2LiNO3 3. Na + S = Na2S 8. CuSO4 = CuO + SO2 4. SO3 = 2SO2 + O2 9. 5Sb + 2Cl2 = 5SbCl5 5. 2Cr + 6HCl = 2CrCl3 + 2H2 10. PbO + 2Al = Al2O3 + Pb

Answer 1

Ca + H2SO4 -> CaSO4 + H2
2HgO -> 2Hg + O2
2FeCl2 + Cl2 -> 2FeCl3
LiCl + AgNO3 -> LiNO3 + AgCl
2Na + S -> Na2S
CuSO4 -> CuO + SO3
2SO3 -> 2SO2 + O2
2Sb + 5Cl2 -> 2SbCl5
2Cr + 6HCl -> CrCl3 + 3H2
3PbO + 2Al -> Al2O3 +3 Pb

Answer 2

Ca + H2SO4 = CaSO4 + H2
2HgO = 2Hg + O2
2 FeCl2 + Cl2 =2 FeCl3
LiCl + AgNO3 = AgCl + LiNO3
2Na + S = Na2S
CuSO4 = CuO + SO3
2 SO3 = 2SO2 + O2
2Sb + 5Cl2 = 2SbCl5
2Cr + 6HCl = 2CrCl3 + 3H2
3 PbO + 2Al = Al2O3 +3 Pb