Predict the sign of the entropy change, AS, for each of the following reactions. a) Na+ (aq) + (aq) + NaCl(s) O AS is po
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Predict the sign of the entropy change, AS, for each of the following reactions. a) Na+ (aq) + (aq) + NaCl(s) O AS is po
Consider the reaction shown below to determine which direction the equilibrium would shift in response to each of the disturbances described here: 2 A (g) — 14B(g) + 5C(g) AH = 23.1 kJ/mol a) Which direction will the equilibrium shift if (C is decreased? Shift left (form more reactants) O Shift right (form more products) O No change More information is required b) Which direction will the equilibrium shift if the volume of the system is increased at constant temperature? Shift left (form more reactants) Shift right (form more products) O No change More information is required c) Which direction will the equilibrium shift if the temperature is increased? Shift left (form more reactants) Shift right (form more products) No change More information is required
Thermite reactions are highly exothermic reactions between a metal oxide and a fine metal powder. The exothermic nature of the reaction is used for welding metal parts such as railway tracks. One hypothetical reaction of this type is A.0. (s) +2B(s) —B,0, (s) +2 A (s) If the surroundings absorb 848.0 kJ/mol of heat due to the reaction, answer the following questions using the table of data provided below (determined at 298 K) Molecule S (JK 'mol") A.O,(s) 84.1 B(5) 25.4 B.0,(s) 57.1 A(s) 29.0 a) Determine AS.. for the reaction at 298 K AS JK 'mo!! 1 b) What is the value of AS... for the reaction at 298 K AS univ JK 'mol