Calculate enthalpy of the reaction : `4NH_3(g) +3O_2(g) rarr 2N_2(g)+ 6H_2O (I)` at 298K, given `/_\H_f` for , ` NH_3 (g)`, `H_2O (I)` are - 46 k J / mol and -286 k J per mol respectively.

For a reaction N_(2(g)) + 3H_(2(g)) hArr 2NH_(3(g))

Balance the following equation : CH_4(g) +O_2(g) rarr CO_2 (g)+H_2O(l)

Calculate the enthalpy change in the reaction, 4NH_(3) + 3O_(2) to 2N_(2) + 6H_(2) O at 298 K,given that the enthalpy of formation at 298 K for NH_(3) and H_(2)O are - 46.0 and - 286.0 KJ mol^(-1) respectively.

Balance the following equations. (i) H_2S (g) + SO_2 (g) rarr S (s)+ H_2O (l)

In the reaction, SO_2(g) + 2H_2S (g) rarr 2H_2O (l) + S (s) the reducing agents is

Classify the following reactions as C_2H_4(g) + H_2 rarr C_2H_6 (g)

Calculate the enthaply change in the reaction, CH_(4)(g) + 2O_(2)(g) to CO_(2)(g) + 2H_(2)O (i)The enthalpy change of formation of CH_(4) (g), CO_(2)(g) and H_(2)O (i) are - 74.8 kj mol^(-1), -393.5 KJ mol^(-1) and - 286 KJ mol^(-1) respectively.

Balnce the following equations: CH_4 (g) + O_2 (g) rarr CO_2 (g) + H_2O(g) Al(s) + HCl (aq) rarr AlCl_3 (aq) H_2 (g)

The standard enthalpy of formation of octane (C_(8)H_(18)) is -250kJ //mol . Calculate the enthalpy of combustion of C_(8)H_(18) . The enthalpy of formation of CO_(2)(g) and H_(2)O(l) are -394 kJ//mol and -286kJ//mol respectively.

identify the type of reaction in the followng example 2H_2(g) + O_2(g) rarr 2H_2O(l)