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12 May, 18:15

Which substance would have the greatest standard molar entropy?

NO2 (g)

N; (g)

N20

NO20

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Answers (1)
  1. 12 May, 21:42
    0
    Option A

    Explanation:

    Standard molar entropy determines the randomness of a mole of substance. Thus, the larger and complex a molecule is, the larger will be its molar entropy.

    The molar entropy of gases is higher than liquids which is turn is higher than solid.

    Here, NO2 is a gas with higher complex structure (trigonal planar) than N2 (linerar), N2O (linear) and N2O2 (linear)

    Hence, NO2 (g) will have greatest standard molar entropy

    Option A is correct
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