SAMPLE BEFORE HEATING 2 (B) 8 The particle diagrams above represent a change in physical state that occurred after heating two separate solid samples of a diatomic element. Which of the following best compares the relative magnitude of AS and gives the sign for the entropy change undergone by each sample, and why? (A) AFTER HEATING AS sample 1, because the changes The entropy values for both samples are positive and AS sample 2 = AS sample 1, because the changes observed for both samples required a net input of energy from the surroundings. The entropy values for both samples are negative and AS, observed for both samples released energy to the surroundings. The entropy values for both samples are positive and AS, sample 2 AS sample 1, because the change in the spatial distribution of the molecules was greater for sample 2 than for sample 1. The entropy values for both samples are negative and AS, sample 1, because the change in the spatial distribution of the molecules was greater for sample 2 than for sample 1. (C) (D) sample 2 AS sample 2 =

SAMPLE BEFORE HEATING 2 (B) 8 The particle diagrams above represent a change in physical state that occurred after heating two separate solid samples of a diatomic element. Which of the following best compares the relative magnitude of AS and gives the sign for the entropy change undergone by each sample, and why? (A) AFTER HEATING AS sample 1, because the changes The entropy values for both samples are positive and AS sample 2 = AS sample 1, because the changes observed for both samples required a net input of energy from the surroundings. The entropy values for both samples are negative and AS, observed for both samples released energy to the surroundings. The entropy values for both samples are positive and AS, sample 2 AS sample 1, because the change in the spatial distribution of the molecules was greater for sample 2 than for sample 1. The entropy values for both samples are negative and AS, sample 1, because the change in the spatial distribution of the molecules was greater for sample 2 than for sample 1. (C) (D) sample 2 AS sample 2 =

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

For each system listed in the first column of the table below, decide (if possible) whether the change described in the second column will increase the entropy S of the system, decrease S, or leave S unchanged. If you don't have enough information to decide, check the "not enough information" button in the last column. System Change AS O AS 0 not enough information AS 0 not enough information AS 0 8.0 L. not enough information
B and C only
Calculate the entropy change of formation for C6H12O6 if the reaction C6H12O6(s) + 6 O₂(g) →6 CO2(g) + 6 H₂O(g) Given AS for O₂ (g) is 205.138 J/mol K, for CO₂(g) is 213.74 J/mol K, for H₂O(g) is 188.825 J/mol K and the AS-60.4 J/K. 1282,44 + 1132.95 AS system = ≤nsº product-5 ns²
(a) In a chemical reaction 3 moles of one gas and 2 moles of a second gas react to form 5 moles of a third gas. Would you expect AS to be positive, negative, or close to zero for this reaction? AS for this reaction should -Select- v (b) In which of the processes described below should the entropy increase? Choose all of the correct possibilities. O ice cubes melting at -5 °C and 1 atm pressure O the reaction of sodium metal with chlorine gas to form solid sodium chloride Oformation of CH4(9) and O₂(g) molecules from CO₂(g) and H₂O(l) at room temperature and 1 atm pressure O a spark causes hydrogen and oxygen gases mixed in a balloon to react explosively separating a mixture of nitrogen and oxygen gases into pure nitrogen and pure oxygen
1)spontaneous or non spontaneous 2) the change in Gibbs free energy is negative or the change in Gibbs free energy is positive 3)positive or negative
Subject: chemistry
Without consulting Appendix B, arrange each group in or-der of increasingstandard molar entropy (S°). Explain.(a) Graphite, diamond, charcoal(b) Ice, water vapor, liquid water(c) O₂, O₃, O atoms
8) a) Calculate AS°en for the following reaction given their respective standard molar entropy values. С-H- (6) + н, (в) сH. (8) S°(C,H2) = 200.9 J/mol K S°(H2) = 103.7 J/mol K S°(C;H4) = 219.3 J/mol K b) the reaction in 'part a' is endothermic, when would it be spontaneous?
(a) In a chemical reaction an explosion occurs. Would you expect AS to be positive, negative, or close to zero for this reaction? AS for this reaction should ---Select--- --Select--- be positive be negative be close to zero (b) In which of the processes described below should the entropy increase? Choose all of the correct possibilities. O ice cubes melting at -5 °C and 1 atm pressure formation of ice cubes in an ice-cube tray in a freezer O the reaction of nitrogen atoms to form N₂ molecules at 25 °C and 1 atm O dissolution of sugar in a hot cup of coffee formation solid rust (iron(III) oxide) by oxygen in the air reacting with the iron in an old boat X
Please answer all (6)
For each of the following pairs of substances, determine which has the larger molar entropy at 298 K: (A) Br2(l) or (B) Cl2(g) (C) Fe(s) or (D) Ni(s) (E) C2H4(g) or (F) C2H6(g) (G) CH4(g) or (H) CCl4(g) (I) MgO(s) or (J) HgO(s) (K) NaCl(aq) or (L) MgCl2(aq)
H.W/ Which the substance in each following pairs would have the greater entropy? Explain. (a) At 75°C and 1 bar: 1mol H,O (1) or 1 mol H20 (g) (b) At 5°C and 1 bar: 50g Clor 0.8 mol Cl, (g) (c) 1 mol Br2 (1, 1 bar, 8°C) or 1 mol Br, (s, 1 bar, -8°C) (d) 0.312 mol SO2 (g, 0.110 bar, 32.5 °C) or 0.284 mol (g, 15 bar, 22.3°C).