Estimate the sign of the entropy change for the reaction:            CaCO3 (s) → CaO (s) + CO2 (g)   Select one: a. is zero b. negative c. not possible to determine the sign d. none of these e. positive

Q: Determine the sign of entropy change (+∆S or -∆S): a. Expansion of gas b. CaCO3(s) → CaO(s) + CO2(g)…

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Q: 6. Calculate AS°univ, and state whether the reaction occurs spontaneously at this temperature.…

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Q: 4. Entropy can be represented mathematically by magnitude a. AS = -1 b. AS # 0 c. AS = +1

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A: Given reaction,      2NaHCO3(s) → Na2CO3(s) + H2O(l) + CO2(g)

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A: Ans is. C

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Q: sign of the entropy change

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