Which substance would have the greatest standard molar entropy?
NO2(g)
N; (g)
N20
NO20

The substance that would have the greatest standard molar entropy is :   (A )  :   NO₂ ( g )

Standard molar entropy is the measurement of the the randomness ( entropy ) of one mole of a substance. The complexity of a substance determines the value of its molar entropy.

From the options listed the most complex substance is NO₂ whose structure is a trigonal planar while other substances have linear structures. Therefore the substance with the greatest standard molar entropy is NO₂.

Hence we can conclude that The substance that would have the greatest standard molar entropy is : NO₂ ( g ).

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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

a plasma is a warm ionized gasoline consisting of approximately equal numbers of definitely charged ions and negatively charged electrons. the characteristics of plasmas are notably unique from the ones of ordinary neutral gases in order that plasmas are considered a awesome "fourth kingdom of remember."