Classify the given chemical reactions into combination,displacement,decomposition and double dispacement reaction.
`Mg + 2HCl rarr MgCl_2 + H_2`
`Zn + CuSO_4 rarr ZnSO_4 + Cu`
`H_2 + S rarr H_2S`
` H_2SO_4 + BaCl_2 rarr 2HCl + BaSO_4`
` 2Na + H_2 rarr 2NaH`
`2NaCL rarr 2Na + Cl_2`
` 2H_2O_2 rarr 2H_2O + O_2`

Classify the given chemical reactions into combination,displacement,decomposition and double dispacement reaction. a) Mg + O_2 rarr 2MgO b) H_2 + I_2 rarr 2HI c) 2H_2O rarr 2H_2 + O_2 d) NaCl + AgNO_3 rarr AgCl + NaNO_3 e) Zn SO_4 + BaCl_2 rarr BaSO_4 + Zn Cl_2 f) Zn + H_2SO_4 rarr ZnSO_4 + H_2 g) FeSO_4 + Zn rarr ZnSO_4 + Fe h) CaCO_3 rarr CaO + CO_2

Classify the following reactions into combination,displacement,decomposition and double dispacement reaction. a) NaCl + AgNO_3 rarr NaNO_3 + AgCl b) Mg + H_2SO_4 rarr MgSO_4 + H_2 c) 2H_2 + O_2 rarr 2H_2O d) 2HI rarr H_2 + I_2 e) CaCO_3 rarr CaO + CO_2 f) Na_2SO_4 + BaCl_2 rarr BaSO_4 + 2NaCl g) Zn + 2HNO_3 rarr Zn(NO_3)_2 +H_2 h) 2Na + Cl_2 rarr 2NaCl

Balance the following chemical equations. Zn + HCl rarr ZnCl_2 + H_2

Balance the chemical equation H_2 + O_2 rarr H_2O

Identify the substance oxidised, substance reduced, oxidising agent and reducing agent in the reaction. MnO_2 + 4HCl rarr MnCl_2 + Cl_2 + 2H_2O

Complete the chemical reactions MnO_4(aq)+H_2O_2(aq)rarr

Complete the chemical reactions PbS (s)+H_2O_2 (aq) rarr

Complete the chemical reactions Ca_3N_2(s)+H_2O(l)rarr