Consider the following reaction: 2 H 2 ( g ) + O 2 ( g ) → 2 H 2 O ( g ) Δ r H ∘ = − 483.64 kJ . What is the enthalpy change for decomposition of one mole of water? (Choose the right option).N

Question

Consider the following reaction: 2 H 2 ​ ( g ) + O 2 ​ ( g ) → 2 H 2 ​ O ( g ) Δ r ​ H ∘ = − 483.64 kJ . What is the enthalpy change for decomposition of one mole of water? (Choose the right option).NEET 2023 (Manipur)

TestHub · Accepted Answer

2 H 2 ​ O ( g ) ⟶ 2 H 2 ​ ( g ) + O 2 ​ ( g ) Δ H ∘ = 483.64 kJ For decomposition of 2 moles of H 2 ​ O , enthalpy change = 483.64 kJ For decomposition of 1 mole of H 2 ​ O , enthalpy change = 2 483.64 ​ kJ = 241.82 kJ

Chemistry - Thermochemistry Question with Solution | TestHub

Options:

Doubts & Discussion