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May or may not use Standard Reduction Potentials to answer the question.
Standard Reduction Potentials at 298 K E° (V) 2.08 v 1.776 v 1.33 v 0.800 v 0.520 v 0.337 v 0.159 v 0.000 v -0.227 v 0.42 v 0.90 v 2.36 v 2.84 v 2.92 v Half-reaction O3 +2 H+1 22 H20+02 H202 + 2 H +2 e -2 H20 Cr207 + 14 H+6e-->2 Cr+7 H20 Cu +e Cu Cut2 +2e Cu 2H+1+2e -H2 Co2 +2e --Co Cr2+2e-Cr Mg#2 + 2e --Mg Cat2 +2e Ca Cs +e ->Cs 7. Which of the following pairs of compounds is expected to have a higher entropy (eircle that one)? Briefly explain your answers. a. N2H4 (g) or N2 (g) b. Nal (s) or Nal (1) c. NH3 (g) or NH3 (aq
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Answer #1

(a) Insufficient data, to predict it. Rather it is not a balanced equation.

(b) Entropy is a measure of the random activity in a system. When a solid becomes a liquid, its entropy increases.

So, NaI(l) has a higher entropy.

(c) When a liquid becomes a gas, its entropy increases.

So, NH3(g) has a higher entropy.

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