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Chemistry
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ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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TRUE OR FALSE
Processes that are spontaneous in one direction are also spontaneous in other direction.
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- 8e. Consider the following reaction: Caco3 (s) → Cao (s) + CO2 (g) Data: A,H = +177.5 kJ mol1 A,S = +160.7 J mol1K1 At which temperature will the reaction become spontaneous?arrow_forwardWhen ∆G is negative, a chemical reaction is spontaneous non-spontaneous endothermic exothermicarrow_forwardEndothermic reactions are more likely to be spontaneous. O True O Falsearrow_forward
- Determine whether the following reactions are spontaneous or non-spontaneous. a) N2 (g) + 3 H2 (g) ⟶ 2 NH3 (g), ΔG = -32,960 J b) 2 NH3 (g) ⟶ N2 (g) + 3 H2 (g), ΔG = 32,960 J HINT: The change in free energy (ΔG) for reaction is equal to the difference in free energy between the products (Gproducts) and the reactants (Greactants): ΔG = (Gproducts) - (Greactants) In spontaneous reactions, the free energy of the products (Gproducts) of a reaction is less than the free energy of the reactants (Greactants). When this is the case, will the change in free energy (ΔG) will have a negative value or a positive value?arrow_forwardChoose the correct statement Entropy is the measurement of heat dispersal and total entropy decreases in any spontaneous process Entropy is the measurement of disorder and total entropy decreases in any spontaneous process Entropy is the measurement of heat dispersal and total entropy decreases in any spontaneous process Entropy is the measurement of heat dispersal and total entropy increases in any spontaneous process Entropy is the measurement of disorder and total entropy increases in any spontaneous processarrow_forwardTRUE OR FALSE The spontaneous process proceeds on its own without any outside assistance.arrow_forward
- A reaction has a ΔH of -87.36 kJ and a ΔS of -175.3 J/K. At what temperature (in K) does the reaction become spontaneous? 626.4 K This reaction is always spontaneous 498.3 K 434.6 K This reaction is never spontaneousarrow_forwardRead the descriptions of physical or chemical changes in the table below. Then decide whether the change will be spontaneous, if you can. Change Two liquids mix, neither absorbing nor releasing heat. During an endothermic chemical reaction, a gas is consumed and a liquid produced. An endothermic chemical reaction between two liquids results in gaseous products. Is this change spontaneous? Yes. O No. O Can't decide with information given. Yes. O No. O Can't decide with information given. O Yes. O No. O Can't decide with information given.arrow_forward
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