Question

calculate how many microstates are avaliable to a single molecule of liquid H20 at 298K

Answer 1

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Ludwig Boltzmann relation for microstates

S = k_B ln W, where S is the value of entropy in joules/mole at T,

k_B is Boltzmann's constant of 1.38 x 10^-23 J/K and

W is the number of microstates.

Liquid water at 273 K has an S^o of 70.0 J/K,

S^o value can be accessed from

https://sites.google.com/site/chempendix/thermo

W = e^S/K_B = e^{(70 J/K / 1.38 x 10-23 J/K)} = 10^{1,991,000,000,000,000,000,000,000} = infinity

there are 10^{1,991,000,000,000,000,000,000,000} accessible microstates for water.

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