For the reaction, 2 H _ 2( ~g ) + O _ 2( ~g ) 2 H ₂ O _ ( g ) , H ^ =-573.2 ~kJ What is heat of decomposition of water per mol?

Step-by-step solution

The given reaction is: 2 H _ 2( ~g ) + O _ 2( ~g ) 2 H ₂ O _ (l) ; _ f H ^ =-573.2 ~kJ ~mol ⁻¹ Reversing the above reaction, 2 H ₂ O _ (l) 2 H _ 2( ~g ) + O _ 2( ~g ) _ d H ^ =573.2 ~kJ ~mol ⁻¹ For decomposition of 1 mole of water, H ₂ O _ (l) H _ 2( ~g ) + 1 2 O _ 2( ~g ) ; _ d H ^ o =286.6 ~kJ ~mol ⁻¹