ch 19 chem

What is delta H?

The change in the heat of something (reaction, phase change) at constant pressure
When do delta H and delta E differ substantially?

When a gas is formed or consumed in reaction/phase change
Entropy is what?

Entropy describes the number of equivalent ways that energy can be distributed in a system. Describes the randomness of a system
What is the standard heat of formation?

is the amount of heat absorbed or evolved when specifically one mole of the substance is formed at and 1 atm from its elements in their standard states
What happens to position of equilibrium of reaction if ∆G◦ is positive?

Position of equilibrium lies closer to reactants and reaction appears non-spontaneous
What happens to position of equilibrium of reaction if ∆G◦ is negative?

Position of equilibrium lies close to products and reaction appears spontaneous.
What happns to position of equilibrium if ∆G◦ is equal to zero?

Position of equilibrium lies halfway between products and reactants. Significant amount of both products and reactants
At equilibrium, a reaction has how much free energy?

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mikepl103

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ch 19 chem

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ch 19 chem

Updated

2013-04-11T01:20:58Z

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