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Thermodynamic Processes

Consider the ...

Question

Consider the following sequence of reactions
Which of the following is always true?

Δ H_{1} = Δ H_{2} + Δ H_{3} + Δ H_{4}

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Δ H_{2} = Δ H_{1} + Δ H_{3} + Δ H_{4}

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Δ H_{3} = Δ H_{1} + Δ H_{2} + Δ H_{4}

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Δ H_{4} = Δ H_{1} + Δ H_{2} + Δ H_{3}

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Solution

The correct option is B $Δ H_{2} = Δ H_{1} + Δ H_{3} + Δ H_{4}$
Solution:- (B) $Δ H_{2} = Δ H_{1} + Δ H_{3} + Δ H_{4}$
According to Hess's Law, regardless of the multiple stages or steps of a reaction, the total enthalpy change for the reaction is the sum of all changes.
Hence,
$Δ H_{2} = Δ H_{1} + Δ H_{3} + Δ H_{4}$

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N C l_{3}

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