Question

Complete the following reactions :
(i) 2Cu₂O + Cu₂S → ……….. + ………
(ii) Ag₂S + NaCN → ……….. + …………
(iii) Al₂O₃ + NaOH → …….. + ……..
(iv) CuFeS₂ + O₂ → ……….. + ………..
(v) Cu₂S + ………… → ……. Cu + SO₂

Answer 1

(i) 2Cu₂O + Cu₂S → 6Cu + SO₂
(ii) Ag₂S + 4NaCN + 2O₂ → 2Na[Ag(CN)₂] + Na₂SO₄
(iii) Al₂O₃.2H₂O₇ + NaOH → 2NaAlO₂ + 3H₂O
(iv) CuFeS₂ + O₂ → Cu₂S + 2FeS + SO₂ ↓
(v) Cu₂S + 2Cu₂O → 6Cu + SO₂ ↓