Chemistry
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Achemical reaction has an increase in entropy and a decrease in enthalpy. what is
Achemical reaction has an increase in entropy and a decrease in enthalpy. what is known about the spontaneity of the reaction?
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LukeneedhelpInMath
4,9(61 marks)
Reaction is spontaneous at all temperatures.
Explanation:
According to Gibb's equation:
= Gibbs free energy
= enthalpy change
= entropy change
T = temperature in Kelvin
= +ve, reaction is non spontaneous
= -ve, reaction is spontaneous
= 0, reaction is in equilibrium
Thus when = -ve (decrease in enthalpy)
= +ve (increase in entropy)
Thus Reaction is spontaneous at all temperatures.
BeautyxQueen
4,8(84 marks)
The atom absorbs or emits light in discrete packets called photons, and each photon has a definite energy. Only a photon with an energy of exactly 10.2 eV can be absorbed or emitted when the electron jumps between the n = 1 and n = 2 energy levels.
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