18.74 Predict the algebraic sign of the entropy change for the following reactions. (a) 12(s) →...
3) Use the standard entropy tables to determine AS for the following reactions. Give a reason why the value of AS would be expected to have this sign (a) Ca(OH)2(s) → Cao(s) + H2O(g) (b) 2 Na(s) + 2 H2O(1) ► 2 NaOH(s) + H2(g) (c) N2(g) + 3 H2(g) → 2 NH3(g)
Predict the sign (positive or negative) on the entropy change for each of these reactions. (a) 2 50, (e) + O2(g) → 250 (6) (b) 2 NH; (6) ► N2 (€) + 3 H2 (8) (c) CO (B) + 2 H2(g) → CH3OH (0)
Predict whether the entropy change for each of the following reactions will have a positive value or a negative value. Calculations are not necessary! (a) 2 CO (g) + 2 Cl2 (g) → 2 COCl2 (g) (b) 2 CO2 (g) → 2 CO (g) + O2 (g) (c) SiCl4 (g) + 2 H2O (g) → 4 HCl (g) + SiO2 (s, quartz)
3. Predict the sign (positive or negative) on the entropy change for each of these reactions. (a) 2 SO2 (g) + O2 (g) → 2 SO3 (g) Negative (b) 2 NH3 (g) → N2 (g) + 3 H2 (g) (c) CO (g) + 2 H2 (g) → CH3OH (1) 4. For the reaction: 2NO2 (g) + N204 (g) at 298 K, The value of AH° and AS™ are -58.03 kJ and -176.6J/K, respectively. (a) What is the value of AG°...
Part A Predict the sign of the entropy change,, for each of thefollowing reactions. Part B Calculate the standard entropy change for the reaction using the data from the following table: Substance 58.9 24.5 279.9 0 0 205.0 2984 2698 228.9 Part A Predict the sign of the entropy change,Delta S^circ, for each of thefollowing reactions.Part B Calculate the standard entropy change for the reaction using the data from the following table
Thermodynamics Practice Problems 1. Predict the sign of AS.(positive or negative) for the following reactions a 2 Mg(s) +,(@) 2 Mgo (s) AS b. CH206(s) → 2C,H,OH(I) + 2003(g) AS c. 2 NH3(g) + CO2(g) → H2O(l) + NH CONH3(aq) AS d. Cu(s) (at 100°C) → Cu(s) (at 25°C) AS 2. Which two variables can indicate if a reaction is spontaneous or not? 3. The second law of thermodynamics tells us that: a Energy is conserved. b. The entropy of...
Predict the sign of the entropy change, Δ S°, for each of the reaction displayed. Drag the appropriate items to their respective bins.\(\mathrm{Ag}^{+}(\mathrm{aq})+\mathrm{Br}^{-}(\mathrm{aq}) \rightarrow \mathrm{AgBr}(\mathrm{s})\)\(\mathrm{Ca}(\mathrm{OH})_{2}(\mathrm{~s}) \rightarrow \mathrm{CaO}(\mathrm{s})+\mathrm{H}_{2} \mathrm{O}(\mathrm{g})\)\(2 \mathrm{~N}_{2} \mathrm{O}(\mathrm{g}) \rightarrow 2 \mathrm{~N}_{2}(\mathrm{~g})+\mathrm{O}_{2}(\mathrm{~g})\)\(2 \mathrm{Na}(\mathrm{s})+\mathrm{Cl}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{NaCl}(\mathrm{s})\)\(\mathrm{C}_{4} \mathrm{H}_{8}(\mathrm{~g})+6 \mathrm{O}_{2}(\mathrm{~g}) \rightarrow 4 \mathrm{CO}_{2}(\mathrm{~g})+4 \mathrm{H}_{2} \mathrm{O}(\mathrm{g})\)\(\mathrm{I}_{2}(\mathrm{~s}) \rightarrow \mathrm{I}_{2}(\mathrm{~g})\)
Predict the sign of the entropy change for each of the following processes: (a) I2(s) → 2I(g) positive cannot predict negative (b) 2Zn(s) + O2(g) → 2ZnO(s) positive negative cannot predict (c) N2(g) + O2(g) → 2NO(g) cannot predict positive negative
1. Predict whether the entropy change for each of the following reactions will have a positive value or a negative value. Calculations are not necessary! (a) CH4 (g) + H2O (g) → C2H5OH (g) (b) 2 NO2 (g) → 2 NO (g) + O2 (g) (c) A1203 (s) + 3 H2 (g) → 2 Al(s) + 3 H2O (1)
Predict the sign of the entropy change, ΔS∘, for each of the reaction displayed. Drag the appropriate items to their respective bins. Pb2+(aq)+2Cl−(aq)→PbCl2(s) CaCO3(s)→CaO(s)+CO2(g) 2NH3(g)→N2(g)+3H2(g) 2Mg(s)+O2(g)→2MgO(s) C5H12(g)+8O2(g)→5CO2(g)+6H2O(g) H2O(l)→H2O(g) Positive Negative