Three thermochemical equation are given below: (i) kJJ mol − 1 C (graphite) + O 2 ( g ) → CO 2 ( g ) Δ H ∘ = x (iii) CO ( gJ ) + 1/2 O 2 ( gk → CO 2 ( g ) i Δ H ∘ = z Based on the above

Question

Three thermochemical equation are given below: (i) kJJ mol − 1 C (graphite) ​ ​ + O 2 ( g ) ​ → CO 2 ( g ) ​ Δ H ∘ = x (iii) CO ( gJ ) ​ + 1/2 O 2 ( gk ​ → CO 2 ( g ) i ​ Δ H ∘ = z Based on the above equations, find out which of the relationship given below is correct.NEET 2013 (Karnataka)

TestHub · Accepted Answer

By considering the Hess's law equation (i) is equal to the sum of equation (ii) and (iii). Related Theory Hess's law states that heat absorbed or evolved in any chemical reaction is fixed quantity and is independent of the path of the reaction or the number of steps taken 0 obtain the reaction. Δ H n e t ​ = ΣΔ H r ​

Chemistry - Thermochemistry Question with Solution | TestHub

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