a. In a chemical reaction two gases combine to form a solid.What do you expect t

Question

a. In a chemical reaction two gases combine to form a solid.What do you expect the sign of S to be? b. For each of these processes, is the entropy change positiveor negative?    i.) The melting of ice cubes at -5Celsius    ii.) The dissolving of sugar in hotcoffee    iii.) The reaction of nitrogen atomsto for N2 molecules    iv.) Alignment of iron filings in a magneticfield    v.) Formation of CH4 andO2 molecules from CO2 and H2O atroom temperature a. In a chemical reaction two gases combine to form a solid.What do you expect the sign of S to be? b. For each of these processes, is the entropy change positiveor negative?    i.) The melting of ice cubes at -5Celsius    ii.) The dissolving of sugar in hotcoffee    iii.) The reaction of nitrogen atomsto for N2 molecules    iv.) Alignment of iron filings in a magneticfield    v.) Formation of CH4 andO2 molecules from CO2 and H2O atroom temperature

Explanation / Answer

We Know that :     The Entropy is the Measurement of Randomness or disorder of the System.    When the two gases combine to form solid theEntropy of the System decreases i.e Entropy is Negative.    b.       i )The Melting point of ice is 00C where it's Entropy increases theprocess of melting ice at - 50C is having         NegativeEntropy.       ii) The dissolving of sugar in hot coffee increases the Entropy , so the Entropyhas the Positive sign.       iii) The Reaction of Nitrogen atoms to form N2 molecules decreases theEntropy so the process has Negative Entropy.       iv ) Alignment of iron filling in the presence of Magnetic field decreases theEntropy of the system. Negative Entropy.        v ) Formationof CH4 and O2 from CO2 and H2O the Entropy of theProcess increases. Positive Entropy.          

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