Which of the following processes are reversib | vedclass

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(A) process is reversible if it occurs in equilibrium,meaning the driving force is infinitesimally small.$I$. Vaporization of a liquid at its boiling

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$I$ & $III$

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(A) process is reversible if it occurs in equilibrium,meaning the driving force is infinitesimally small.$I$. Vaporization of a liquid at its boiling point occurs at constant temperature and pressure where liquid and vapor are in equilibrium. Thus,it is a reversible process.$II$. Expansion of gas into vacuum is a free expansion,which is irreversible.$III$. Transformation of a solid substance into liquid at its melting point occurs at constant temperature and pressure where solid and liquid are in equilibrium. Thus,it is a reversible process.$IV$. Neutralization of an acid by a base is a spontaneous,highly exothermic reaction that proceeds to completion,making it irreversible.Therefore,$I$ and $III$ are reversible processes.

Which of the following processes are reversible?
$I$. Vaporization of a liquid at its boiling point.
$II$. Expansion of gas into vacuum.
$III$. Transformation of a solid substance into liquid at its melting point.
$IV$. Neutralization of an acid by a base.

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Which of the following processes are reversible?$I$. Vaporization of a liquid at its boiling point.$II$. Expansion of gas into vacuum.$III$. Transformation of a solid substance into liquid at its melting point.$IV$. Neutralization of an acid by a base.