Match each reaction or description to the change in entropy. PA CaO(s) + 2 HCl(g) ---> CaCl₂ (s) + H₂O(l) Raindrops form in a cloud freezing water to form ice Frost forms on the windshield of your car Air is pumped into a tire CO₂(g) + H₂O(l). SOz(g) + CaO(s) - ----> -----> H₂CO3(aq) CaSO3(s) BaF₂ (s) --> Ba2+ (aq) + 2F (aq) 2Hg (1) + O₂ (g) --> 2HgO (s) C₂H4(g) + H₂(g) C₂H6(g) boiling water to form steam dissolution of solid KCl in water | PCl3(g) + Cl₂(g) ----> PCL5(g) Sugar dissolves in coffee 2NO₂ (g) --> N₂O4 (g) ---> Gasoline vaporizes in the carburetor of an automobil Moisture condenses on the outside of a cold glass melting ice to form water mixing of two gases into one container seperating solute particles throughout a solvent Ni(s) + 2 HCl(aq) H₂(g) + NiCl(aq)

Classify the following scenarios as positive or negative ΔS (entropy).

2. Which of the following statements regarding entropy is FALSE? a) Sugar poured into a container of water dissolves. The entropy of the sugar and water increases. b) A block of dry ice sublimates to CO2 gas. The entropy change is positive. c) Wood bums and becomes ash, smoke and gases. The entropy change increases. d) Building a house from building blocks (bricks, stones and mortar). The entropy increases. e) A snowman melts on a spring day. 3. Which of the following processes involve an increase in AS ? i. Br:() H. 2H:(9) + O:(g) il. 2KCIO:(s) iv. 2H9O(s) Br:(g) 2H:0(g) 2KCI(s) + 30:(g) 2Hg(1) + O:(g) a) i only b) i only c) i and iv only d) i, i, and iv only e) i, ii, ii, and iv only 4. Predict the sign of AS" of the reaction, and indicate the reason for the change 2H:(g) + O:(g) 2H;0(g) (Select all that apply.) il. i. iv. due to the dissolving of a compound due to the precipitation of a compound due to an increase in the number of moles of gas due to a decrease in the number of…

For which of these is there an increase in entropy? A. H2O(l)+CO2(g)→H2CO3(aq) B. 2Na3PO4(aq)+3CaCl2(aq)→6NaCl(aq)+Ca3(PO4)2(s) C. Ba(OH)2(s)+2NH4Cl(s)→BaCl2(aq)+2NH3(g)+2H2O(l) D. H2O(g)→H2O(s) The 2nd Law of Thermodynamics states that both matter and energy in a closed system A. will continue to interact and change from one form to another B. will eventually completely stop moving C. maximize entropy over time D. combine into a single pure crystalline substance over time

For each of the processes, determine whether the entropy of the system is increasing or decreasing. The system is underlined. Entropy is increasi iron rusts to iron oxide a block of dry ice sublimates to CO₂ gas a glass bowl falls and shatters Answer Bank Entropy is decreasing a water bottle cools down in a refrigerator dissolved sugar precipitates out of water to form rock candy

Which of the following processes results in the largest decrease in Entropy? The heat of fusion of water is 333 J/g, and the heat of vaporization of water is 2260 J/g. The freezing point of water is 0 °C, and the boiling point of water is 100 °C. The vaporization of liquid water to water vapor The condensation of water vapor to liquid water. The cooling of liquid water from 100 C to 0 C The melting of ice to liquid water. The freezing of liquid water to ice.

1. A 100-mL sample of water is placed in a coffee cup calorimeter. When 1.0 g of an ionic solid is added, the temperature decreases from 21.5°C to 20.8°C as the solid dissolves. Which of the following is true for the dissolving of the solid?  Consider ΔΔG = ΔΔH- TΔΔS,  Group of answer choices A. ΔH > 0 B. ΔSsys <  0 C. ΔSuniv <  0 D. cannot determine with information provided E. ΔH < 0     2. The standard molar free energies of formation of NO2(g) and N2O4(g) at 25°C are -51.84 and -98.28 kJ/mol, respectively. What is the value of Kp (in atm) for the reaction written as follows at 25°C?  ΔΔG° = ─RTlnK, R = 8.314 J/K          2NO2 (g)  ↔↔N2O4 (g) Group of answer choices A. 1.37 × 108 B. 7.31 × 10-9 C. 8.84 D. 1.17 × 104 E. 0.113   3. For the reaction          CO2(g) + 2H2O(g) → CH4(g) + 2O2(g),          ΔH° = 803 kJwhich of the following will increase K? Group of answer choices A. increasing the volume of reaction vessel B. all of these C. decreasing…

Consider the following reaction at 37°C. 2 NOCI(g) = 2 NO(g) + Cl₂(g) AG⁰ = 38.5 kJ If 2.17 atm of NOCI are reacted in a rigid container at 37°C, calculate the equilibrium partial pressure (in atm) of NO. atm

Predict which of the following reactions has a POSITIVE entropy change (ΔSsys). a.CaCO3(s) ➜ CaO(s) + CO2(g) b.H2(g) + I2(g) ➜ 2Hl(g) c.H2O(g) ➜ H2O(s) d.2 N2(g) + O2(g) ➜ 2 N2O(g)

Which change is likely to be accompanied by an increase in entropy? A. N2 (g) + 3 H2 (g) → 2 NH3 (g) at 25 °C + AgCl (s) at 25 °C B. Ag* (aq) + CF (aq) C. CO2 (s) → CO2 (g) at -70 °C D. H20 (g) = H2O (I) at 100 °C