O3(g) + NO(g) > NO2(g) + O2(g). Delta H = -199kJ and delta S = -4.1J/k, calculate delta G at 25C.?
Answer:
delta G = delta H -- T delta S
= -199kj - 25C( -4.1j/k)
I think you need to change temperature to kelvin If I am right.
then delta G would be
delta G = -199kj - [25+273K](-4.1j/K)
= - 199kj - (298.0K * -4.1j/K)
= - 199kj + 1221.8j { both Capitol K would get canceled and only j will be remained and negative signs will be positive after combining.}
So the answer is :
delta G =1022.8kj
Why?
deltaG = DeltaH - T*DeltaS
delta G= -199kJ - (273+25 K)(-4.1)
= -199kJ+1221.8j
= -199kJ +1.222kj
= -197.778kJ
= -197.8kJ
dont forget to convert joules to kj or kj to joules
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