Question

K+S =>?
Fe+H2SO4=>?
Na+Fe(SO4)2=>?
Cu+Na2So4=>?
Fe+Cl2=>?
Ba+H2O=>?
Cu+O2=>?
Cu+S=>?

Answer 1

2K + S = K₂S
2Fe + 3H₂SO₄ = Fe₂(SO₄)₃ + 3H₂
4Na + Fe(SO₄)₂ = 2Na₂SO₄ + Fe
Cu + Na₂SO₄ = CuSO₄ + 2Na
4Fe + 3Cl₂ = 2Fe₂Cl₃
Ba + H2O = BaO + H₂
2Cu + O₂ = 2CuO
Cu +S = CuS