Chemistry
Dilute hydrochloric acid is added first to a mixture of iron and sulphur and then to a compound formed by iron and sulphur. Name the gases formed in each case.
Related Questions
Name a metal oxide which is yellow in colour.
Name the process of change of state by which napthalene changes into vapour. Name an element that can undergo the same change of state.
State whether the following conversations are examples of oxidation or reduction :
(a) Na ⟶ Na+ + e-
(b) PbO2 ⟶ PbSO4
Complete the following equations and state in each case if the reaction represents oxidation or reduction :
(a) Fe2+ ⟶ Fe3+
(b) Cl- ⟶ Cl
(c) Cu2+ ⟶ Cu
(d) Ag ⟶ Ag+
(e) H ⟶ H+
(f) Al ⟶ Al3+