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### Hess's Law

Posted: Sun Feb 09, 2020 12:03 pm
What property of enthalpy allows Hess's law to be used?

### Re: Hess's Law

Posted: Sun Feb 09, 2020 12:12 pm
We can use Hess's law because enthalpy is a state function, which means we can sum the enthalpy values to find the total enthalpy of the new chemical equation.

### Re: Hess's Law

Posted: Sun Feb 09, 2020 12:12 pm
Enthalpy is a state function (state values can be added/subtracted without worrying how they got there).

### Re: Hess's Law

Posted: Sun Feb 09, 2020 3:26 pm
We're able to use Hess' Law because enthalpy is a state function. Since it's a state function, we're able to just add the enthalpies together.

### Re: Hess's Law

Posted: Sun Feb 09, 2020 5:16 pm
Enthalpy is a state function therefore the total enthalpy can be summed up which allows Hess's law to be used.

### Re: Hess's Law

Posted: Sun Feb 09, 2020 5:35 pm
Hess's law is able to be used because enthalpy is a state function. Since enthalpy is a state function, we're able to add the enthalpies together.

### Re: Hess's Law

Posted: Sun Feb 09, 2020 6:34 pm
Enthalpy is a state function which means their enthalpy values could be added/subtracted together

### Re: Hess's Law

Posted: Sun Feb 09, 2020 6:37 pm
Enthalpy is a state function, so enthalpy is additive

### Re: Hess's Law

Posted: Sun Feb 09, 2020 9:46 pm
Since enthalpy is a state function, their values can be added/subtracted together

### Re: Hess's Law

Posted: Sun Feb 09, 2020 9:50 pm
We can use Hess's law because enthalpy is a state property, so it doesn't matter the path you take to get from an initial condition to a final condition, the change in enthalpy will always be the same.

### Re: Hess's Law

Posted: Sun Feb 09, 2020 9:59 pm
Since it is a state function, enthalpy values can be added together or subtracted.