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प्रश्न
Answer the following in one or two sentences.
State second law of thermodynamics in terms of entropy.
उत्तर १
Statement: “The second law of thermodynamics states that total entropy of a system and its surroundings increases in a spontaneous process.”
For the process to be spontaneous,
`triangle "S"_"total" = triangle "S"_"sys" + triangle "S"_"surr"` > 0.
उत्तर २
Second law of thermodynamics in terms of entropy:
The second law of thermodynamics states that, “The total entropy of the system and its surroundings (universe) increases in a spontaneous process”.
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संबंधित प्रश्न
Define entropy.
Answer the following in one or two sentences.
Comment on the spontaneity of reactions for which ∆H is positive and ∆S is negative.
Answer in brief.
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Answer the following question.
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(Given ΔH for the reaction is –572 kJ).
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II. 1.0 mol H2O (270 K, 1 atm)
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In which of the following, ∆S is positive?
For the reaction:
\[\ce{2Cl_{(g)} -> Cl2_{(g)}}\]
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For which of the following reaction, ΔH = ΔU?
Dinitrogen and dioxygen combined to form nitrous oxide in equilibrium at 850 K. The equilibrium constant for this reaction is 0.56. If the equilibrium concentration of nitrous oxide gas is 3 × 10-3 M and both dinitrogen and dioxygen have the same concentration, then what will be the concentration of dinitrogen gas in M?
Write the correct condition for spontaneity in terms of Gibbs energy.
Identify whether the following pair have a larger entropy or not. If yes then Why?
C2H5OH(l) or C2H5OH(g)
Give quantitative definition of entropy. Give its units.
Define second law of thermodynamics.
