Hello!
What does it mean when a reactant or product is in its standard state?
Thanks!
Standard State
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Re: Standard State
Here are the standard states, from this past Friday's (1/29) lecture:
gas: 1 atm
a solution: 1 M (at 1 atm)
pure liquid or solid: pure liquid or solid
an element: the most stable phase at 1 atm and the temperature of interest (usually 25 degrees Celsius)
Hope this helps!
gas: 1 atm
a solution: 1 M (at 1 atm)
pure liquid or solid: pure liquid or solid
an element: the most stable phase at 1 atm and the temperature of interest (usually 25 degrees Celsius)
Hope this helps!
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Re: Standard State
Standard state for a gas is 1 atm and for a solution is 1 M. The temperature of interest is usually 25 degrees Celsius. When all products and reactants are in their standard state, reaction enthalpy is called standard reaction enthalpy.
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Re: Standard State
Heat and work are not standard states because they depend on the path taken. However, heat capacity is a state property. State properties are not dependent on path taken to obtain that state.
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Re: Standard State
When a reaction has a standard state, that means that standard units and levels of reactants and products (whether they are solid, liquid, or gas) are being used.
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