Termodinâmica
Quiz
•
Physics, Chemistry, Science
•
University - Professional Development
•
Hard
Marcelo Lima
Used 1+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual o critério de espontaneidade?
ΔS=0 e ΔS<0
ΔS=0
ΔS=0 ou ΔS>0
ΔS=0 ou ΔS<0
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual o critério de espontaneidade?
ΔG=0 e ΔG<0
ΔG<0
ΔG=0 ou ΔG>0
ΔG=0 ou ΔG<0
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual destas não é uma forma de medir a energia livre do sistema?
G≡H-TS
dG=dH-TdS-SdT
dG=dq-TdS (p e T constantes)
ΔG=ΔH+TΔS (p e T constantes)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Analise a afirmação: "Num processo reversível ΔG é obrigatoriamente igual à zero."
Verdadeiro
Falso
Depende das demais funções de estado
Somente para sistemas adiabáticos
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sabendo que ΔH° e ΔS° da água em 25 °C são respectivamente, 44,012 kJ mol-1 e 181,806 J mol-1 K-1, qual seria se valor de ΔG°?
5.890 J mol-1
8.590 J mol-1
-8.590 J mol-1
-10.193 J mol-1
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sabendo que ΔH° e ΔS° (para um dado processo envolvendo a água) são respectivamente, 88,024 kJ mol-1 e 237,612 J mol-1 K-1, qual seria o valor da temperatura, quando esse processo alcançasse o equilíbrio? Que tipo de equilíbrio seria esse?
373,5 K, Equilíbrio líquido-vapor
273,15 K, Equilíbrio sólido-vapor
298,15 K, Equilíbrio Químico
370,5 K, Equilíbrio líquido-vapor
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Como se calcula a energia livre de uma reação?
ΔG reação = ΔG produtos - ΔG reagentes
ΔG reação = ΔH reação - TΔS reação
ΔG reação = ΔU reação - TΔS reação + Δ(PV) reação
ΔG reação = w reação + q reação
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