7. (1) Based on the information given, determine, with explanation, whether the reaction direction would favor the products or favor the reactants for each of the following cases. (a) An exothermic reaction with an increase in entropy. (b) A reaction with AG having positive sign. (2) Using a few words, explain whether using a catalyst would affect the direction of a reaction (3) For the reaction with the following energy diagram, estimate its: (a) activation, and (b) overall Gibbs Free Energy. Is this reaction exergonic or endergonic? 40 30 20 10 reaction coordinate free energy, kJ/mol

Q: Using S values from Appendix C, calculate AS values for the following reactions. In each case,…

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Q: Zn(s) + 2HCI(aq) ZNC12(aq) + H2(g) + 153kJ For this reaction at 25°C, · Change in enthalpy: [ Select…

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Q: A reaction has a standard free-energy change of -19.70 kJ mol-(-4.708 kcal mol-). Calculate the…

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Q: For the reaction   CO(NH2)2 +H2O(l) -> CO2(g) + 2NH3(g) The ∆S^2 and ∆H^2 is 354.8KJ/mol and…

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Q: 14. The correct Lewis structure for nitrogen trichloride has: (a)3 N-CI bonds and a total of 10 lone…

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Q: How does temperature effect the following reaction in terms of its free energy?

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Q: (a) Use the data given below and calculate AHº, ASO, AGO, and K, at 25° C for the reaction: 2 SO:…

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Q: 7) Ethanol, is produced by fermentation of the glucose in fruit or grain. The reaction is: C,H1206…

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Q: 3.4 The standard change in the formation of FeO is -255 kJ/mol at 25°C. b) What is the equilibrium…

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Q: The standard free energies of formation (AG) of the three isomers of pentane (see p. 365) in the gas…

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Q: Consider the reaction: Co(g) + 3H2(g)–CH4(g) + H20(g) Using standard thermodynamic data at 298K,…

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Q: A student determines the value of the equilibrium constant to be 1.09x10 for the following reaction.…

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Q: A student determines the value of the equilibrium constant to be 7.86x10-37 for the following…

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Q: 30. When H₂SO4 dissolves in water, SO2 and Hare formed and the temperature of the solution…

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Q: If AH° for this reaction is -198 kJ, what is the value of K, at 1060 K?

A: Given data is Kp1 = 0.365  T1  = 1150 K  Kp2 = ?        T2 = 1060 K  ∆H = -198 kJ

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.