a. For each of the following changes state whether the entropy of the system decreases or increases.

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a. For each of the following changes state whether the entropy of the system decreases or increases. In each case, explain your answer in terms of the order or disorder of the particles

i. NaCl(s) + aq → Na⁺(aq) + Cl^–(aq)

ii. H₂O(g) → H₂O(l)

b. The table shows the formula, state and standard molar entropies of the first six straight-chain alkanes.

i. Describe and explain the trend in the standard molar entropies of these alkanes.

ii. Estimate the value of the standard molar entropy of the straight-chain alkane with the formula C₆H₁₄.

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Cambridge International AS And A Level Chemistry Coursebook

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Authors: Lawrie Ryan, Roger Norris

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a. For each of the following changes state whether the entropy of the system decreases or increases.

Question:

Alkane CH,(g) C,H,(g) C,H,lg) CH,) AS° /JK'mol1 186.2 229.5 269.9 310.1 261.2

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a i Entropy of NaCl is low because it is ordered ions only vibrate Entropy of water is ...View the full answer

Cambridge International AS And A Level Chemistry Coursebook

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