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NEET UG CHEMISTRY MCQ: THERMODYNAMICS
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Hess’s law states that
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Correct option: A
The standard enthalpy of an overall reaction is the sum of the enthalpy changes in individual reactions.
Option A (The standard enthalpy of an overall reaction is the sum of the enthalpy changes in individual reactions) is correct because it accurately describes Hess's Law.
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The internal energy of one mole of a gas is:
An ideal gas is allowed to expand both reversibly and irreversibly in an isolated system. If is the initial temperature and is the final temperature, which of the following statements is correct?
For which of the process, ∆S is negative?
The work done by a weightless piston in causing an expansion ∆V (at constant temperature), when the opposing pressure, P is variable, is given by:
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Reason :- During phase transition work done is always negative. For the reaction, at . Hence, is
Reason :- During phase transition work done is always negative. For the reaction, at . Hence, is