Practice Exercise 2 Choose the system with the greater entropy in each case: (a) 1 mol...
Choose the system with the greater entropy in each case: (a) 1 mol of H21g2 at STP or 1 mol of SO21g2 at STP, (b) 1 mol of N2O41g2 at STP or 2 mol of NO21g2 at STP. Please explain.
1. (2 points) In each pair, choose the one with the most entropy. 1 mol of O3 (at STP) or 1 mol of SO3 (at STP) a. 1 mol of He at 100 K or 1 mol of He at 0 K b. c. Glucose (C&H12O6) or sucrose (C12H22O11) 1 mol of N2 gas at 0.01 atm or 1 mol of N2 gas at 1.0 atm d.
Which system has the greatest entropy? A. 1 mol of H2(g) at STP B. 1 mol of H2(g) at 100∘C 0.5 atm C. 1 mol of H2O(s) at 0∘C D. 1 mol of H2O(l) at 25∘C
2. In each case below, predict which molecule of the pair has the greater molar entropy under the same condition (assume gaseous species). a. CO and CO2 b. CH3CH2CH3 and CH 2CH CH2 C. CHCHCHCH2CH, and CH 3 HCCH (a CH
2. How does the entropy of a system change for each of the following processes? Indicate 49<0 or > 0 (a) (b) (c) (d) (e) (f) A solid melts. A liquid freezes. A liquid boils. A vapor is converted to a solid A vapor condenses to a liquid. A solid sublimes. 13. Given that AH value of AG = -2219 kJ/mol and that AS au=-216 JK mol at 25°C, determine the at 25 °C for the reaction CH5g + 50g...
Using the standard entropy values: NOG), S = +210.6 J mol-1 K-1 02(0), sº = +205.0 J mol-1 K-1 NO2(g), sº = +240.5 J mol-1 K-1 calculate the standard entropy change, Asº, for the reaction: NO(g) + O2(g) NO2(g) A.-246.1 kJ B. +246.1 kJ C.-175.1 kJ D.-656.1 kJ E. -72.6 kJ
The change in entropy, ASP, is related to the the change in the number of moles of gas molecules, Ang. Determine the change in the moles of gas for each of the reactions and decide if the entropy increases, decreases, or has little or no change. A. 2 H, (8) +0,(8) ► 2H, 0(1) The entropy, AS Ang = mol O decreases. has little or no change. O increases. B. CO(g) +3 H,(g) – CH (8) + H,(g) The entropy,...
Number five
temperature increases and entropy increases
temperature is unchanged and entropy increases
temperature increases and entropy us unchanged
temperature increases and entropy decreases
number 6
none
temperature increases and entropy increases
temperature is unchanged and entropy increases
temperature increases and entropy us unchanged
temperature increases and entropy decreases
Number seven
spontaneous at all temperatures
Non-spontaneous at all temperatures
not enough information
spontaneous at low temperature only
spontaneous at high temperature only
5. Choose best answer from drop-down menu: 3...
For each of the following pairs, choose the substance with thehigher entropy per mole at a given temperature: (a) Ar(l) orAr(g) (b) He (g) at 3 atm pressure or He(g) at 4.5 atm pressure (c) 1 mol of H2O(g) in 15.0 L or 1 mol of H2O(g) in 1.50L. (d) 1 mol of O2(g) and 1 mol ofN2(g). (e) 1 mol CH4 (g) and 1 mol C3H8 (g) (f) Why 1 mol of HCl(g) has more entropy than 1 mol...
1. Predict whether the entropy change for each of the following reactions will have negative value. Calculations are not necessary! (a) CS2 (g) + 3 02 (g) → CO2(g) +2 SO2 (g) (b) 2 CH4 (g) + 3 02 (g) → 2 CO (g) + 4H2O(g) (c) 2 NH4 (1) +2 NO2 (g) → 3 N2(g) + 4H2O(g) 2. Calculate the entropy change at 25°C for the following reaction: Ca (s) + 0.125 S, (s) + 2 02 (g) →...