Practice Problem CONCEPTUALIZE
The following table shows the signs of
Process |
|
|
|
|
1 |
- |
- |
||
2 |
+ |
+ |
||
3 |
- |
+ |
||
4 |
- |
+ |
Want to see the full answer?
Check out a sample textbook solutionChapter 18 Solutions
Loose Leaf for Chemistry
- Predict the sign of S for each of the following and explain. a. the evaporation of alcohol b. the freezing of water c. compressing an ideal gas at constant temperature d. dissolving NaCl in waterarrow_forwardBe sure to answer all parts. Consider the combustion of butane gas: C4H10(g) + 13/2 O2(g) → 4CO2(g) + 5H2O(g) (a) Predict the signs of ΔS and ΔH (b) Calculate ΔG at 298 K.arrow_forwardWhat is the sign of Δ S for the reaction below as written? CaCO3(s) ---------> CaO(s) + CO2(g) Group of answer choices A positive B negative C zeroarrow_forward
- Predict the sign of S and then calculate S for each of the following reactions. a. 2H2S (g) + SO2(g) 3Srhommbic(s) + 2H2O(g) b. 2SO3 (g) 2SO2(g) + O2(g) c. Fe2O3(s) + 3H2(g) 2Fe(s) + 3H2O (g)arrow_forwardEstimate 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. positivearrow_forwardCalculate the entropy change when graphite burns insufficient supply of oxygen as shown in the following equation, C graphite (s) + O2 (g) -> CO2 (g) Given: S° of C graphite (s) = 5.7 J/molK S° of O2 (g) = 205 J/molK S° of CO2 (g) = 213.6 J/molKarrow_forward
- A solid sample of copper, Cu(s), is placed in a test tube containing a solution of nitric acid, HNO3(aq). When the substances are mixed the solution turns bluish-green, a brown gas is produced and the temperature of the test tube is observed to increase. What are the signs of △Hsys,△Ssys,△Gsys,△Suniv? △Hsys : positive, negative, or impossible to determine △Ssys : positive, negative, or impossible to determine △Gsys : positive, negative, or impossible to determine △Suniv : positive, negative, or impossible to determine As temperature increases, the reaction becomes _____ spontaneous. A) more B) lessarrow_forwardFor which set of conditions is the reaction always nonspontaneous? ΔH = + and ΔS = + ΔH = - and ΔS = - ΔH = - and ΔS = + ΔH = + and ΔS = - ΔH = 0 and ΔS = 0arrow_forwardConsider two perfectly insulated vessels. Vessel 1 initially contains an ice cube at 0C and water at 0C. Vessel 2 initially contains an ice cube at 0C and a saltwater solution at 0C. Consider the process H2O(s) H2O(l). a. Determine the sign of S, Ssurr, and Suniv for the process in vessel 1. b. Determine the sign of S, Ssurr, and Suniv for the process in vessel 2. (Hint: Think about the effect that a salt has on the freezing point of a solvent.)arrow_forward
- What is the sign of ΔS for the reaction Na2B4O7(s) 2 Na+(aq) + B4O72-(aq) ?arrow_forwardFor the reaction CaCO3(s) → CaO(s) + CO2(g) which is spontaneous only at high temperatures Group of answer choices ∆H is positive and ∆S is positive ∆H is negative and ∆S is positive ∆H is positive and ∆S is negative ∆H is negative and ∆S is negativearrow_forwardIndicate the sign (positive or negative) of ΔGo at low and high temperatures for each of the following processes: a) NH3(g) + HCl(g) → NH4Cl(s) b) CaCO3(s) → CaO(s) + CO2(g) c) CH3OH(l) → CH3OH(g) ΔHo < 0 Determine what it would be at Low and high b)CaCO3(s)-->CaO(s)+ CO2(g) Ho > 0 Determine what it would be at low and high c)CH3OH(I)-->CH3OH(g) ΔHo > 0 Determine what it would be at low and high d) 2Cl2(g) + 7O2(g) → 2Cl2O7(l) ΔHo > 0 Determine what it would be at low and higharrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage Learning
- Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning