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Objective: To apply Hess’s Law in order to determine the ∆H of a reaction if given the ∆H of two or more related reactions.
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Version 2.2.1
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Hess’s Law
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Apprentice Level 3 Questions Manipulate (reverse, multiply by a factor) and add two given equations to produce a target equation. Determine the ∆H of the target equation. Includes fictional substances.
Pick from among the three difficulty levels -  Apprentice Level, Master Level, and Wizard Level.
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Master Level 3 Questions Manipulate (reverse, multiply by a factor) and add three given equations to produce a target equation. Determine the ∆H of the target equation. Includes fictional substances.
Wizard Level Completed
Wizard Level 3 Questions Manipulate (reverse, multiply by a factor) and add 2-3 given equations to produce a target equation. Determine the ∆H of the target equation. Includes real substances.
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Net Equation (Sum of Above Equations)
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∆H:
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Dataway!! You have accurately manipulated the given equations so that there sum is equal to the Target equation. Now you will use Hess’s Law to determine the ∆H of the target equation.
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Enter the value of ∆Hrxn. Tap Check Answer button when done. (Careful. Only 1 allowed attempt.)
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Activity:
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Eq’n #2:
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∆H =
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Target:
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Eq’n #1:
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Eq’n #3:
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