Show me the periodic table
1 answer:
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Explanation:
dU=TdS-pdV (given)
To prove = 1) (at constant U)
2) (at constant V)
Solution: 1)
dU=TdS-PdV
Derivative of constant is zero.
Given that internal energy is ,U = constant
(hence proved)
Solution: 2)
dU=TdS-PdV
Differentiating with respect to dU, we get:
Derivative of constant is zero.
Given that volume is constant , V= constant
(hence proved)
Answer: at relatively low temperatures.
Explanation:
According to Gibbs equation;
= Gibb's free energy change
= enthalpy change
T = temperature
= entropy change
A reaction is spontaneous when = Gibb's free energy change is negative.
Thus
Thus the reaction is spontaneous or is negative only when
Thus the reaction is spontaneous at relatively low temperatures