1996 Free Response Answers
... The cell potential would increase Since all ions are at 1 M, Q for the system is 1 and E° = (RT/nF) ln K so as T increases, so should E° Note: no credit lost if student recognizes Keq dependence on T. For temperature change in this problem, decrease in ln K term is small relative to the term RT/nF ...
... The cell potential would increase Since all ions are at 1 M, Q for the system is 1 and E° = (RT/nF) ln K so as T increases, so should E° Note: no credit lost if student recognizes Keq dependence on T. For temperature change in this problem, decrease in ln K term is small relative to the term RT/nF ...
Pictures and Graphs
... unsaturated, saturated, or supersaturated at 80oC? (highlight answer) c) A solution is made using 70. g of potassium nitrate. Is the solution unsaturated, saturated, or supersaturated at 80oC? (highlight answer) d) A solution is made using 70. g of lead(II) nitrate at 40 oC. If a crystal of lead(II) ...
... unsaturated, saturated, or supersaturated at 80oC? (highlight answer) c) A solution is made using 70. g of potassium nitrate. Is the solution unsaturated, saturated, or supersaturated at 80oC? (highlight answer) d) A solution is made using 70. g of lead(II) nitrate at 40 oC. If a crystal of lead(II) ...
pH Scale and Concentration Date: Chemistry!
... It has a higher concentration of H 3O+ than OH– and causes litmus to turn blue. It has a higher concentration of OH – than H3O + and causes litmus to turn blue. It has a higher concentration of H 3O+ than OH– and causes methyl orange to turn yellow. It has a higher concentration of OH – than H 3O+ a ...
... It has a higher concentration of H 3O+ than OH– and causes litmus to turn blue. It has a higher concentration of OH – than H3O + and causes litmus to turn blue. It has a higher concentration of H 3O+ than OH– and causes methyl orange to turn yellow. It has a higher concentration of OH – than H 3O+ a ...
Chemistry Section 2
... ΔHRXN the enthalpy change for a reaction: This is usually calculated by adding reactions (and their associated enthalpy changes) from a table. You must select the reactions from the table that—when added together—will produce the net reaction for which you are calculating ∆HRXN. To calculate ∆HRXN y ...
... ΔHRXN the enthalpy change for a reaction: This is usually calculated by adding reactions (and their associated enthalpy changes) from a table. You must select the reactions from the table that—when added together—will produce the net reaction for which you are calculating ∆HRXN. To calculate ∆HRXN y ...
Chem163_Electrochem
... spontaneous, and that the reaction would produce an electric current when set up as a galvanic cell. When conditions are not at standard conditions, the Nernst equation can be used as a correction. In the Nernst equation R is the universal gas constant with a value of 8.3145 J/Kmol, T is the temper ...
... spontaneous, and that the reaction would produce an electric current when set up as a galvanic cell. When conditions are not at standard conditions, the Nernst equation can be used as a correction. In the Nernst equation R is the universal gas constant with a value of 8.3145 J/Kmol, T is the temper ...
Chemical Kinetics
... ethyl acetate would change appreciably from its original concentration, whereas the concentrations of NaOH and water would remain essentially unchanged because they are present in great excess. In this case, the contribution of sodium hydroxide to the rate expression is considered constant and the r ...
... ethyl acetate would change appreciably from its original concentration, whereas the concentrations of NaOH and water would remain essentially unchanged because they are present in great excess. In this case, the contribution of sodium hydroxide to the rate expression is considered constant and the r ...
CHEMISTRY 1710 - Practice Exam #2 (KATZ)
... water bath at 99°C. The barometric pressure is 753 torr. If the mass of the liquid retained in the flask is 1.362 g, what is its molar mass? a. ...
... water bath at 99°C. The barometric pressure is 753 torr. If the mass of the liquid retained in the flask is 1.362 g, what is its molar mass? a. ...
Determination of electrochemical equivalent of copper and
... practice we will use copper sulfate solution which is a strong electrolyte. 2. Electrolyte in an electric field. At the moment when the electric field is applied to the electrolyte, e.g. through dipping the electrodes connected with the voltage source, electrostatic forces start to act on ions. Thes ...
... practice we will use copper sulfate solution which is a strong electrolyte. 2. Electrolyte in an electric field. At the moment when the electric field is applied to the electrolyte, e.g. through dipping the electrodes connected with the voltage source, electrostatic forces start to act on ions. Thes ...
2011 Lecture 22: Transport in Bulk Electrolytes
... In many situations, one wants to enable the diffusion of an active ionic species i = 1 without any significant electromigration. This can be achieved adding a large excess of other, inert ions, comprising supporting electrolyte (c1 c2 , .., cN ), whose concentration remains approximately constant ...
... In many situations, one wants to enable the diffusion of an active ionic species i = 1 without any significant electromigration. This can be achieved adding a large excess of other, inert ions, comprising supporting electrolyte (c1 c2 , .., cN ), whose concentration remains approximately constant ...
4.5 Solid fast-ion conductors 1
... the piece with a β-alumina buffer powder or by ‘zone sintering’ which involves passing the article through a very hot zone(1700℃),10mm/min-1. Intrinsic conductivity anisotropy of β-alumina demands that careful consideration is given to controlling the texture of the ceramic Na-S battery (Na(l)/β-al ...
... the piece with a β-alumina buffer powder or by ‘zone sintering’ which involves passing the article through a very hot zone(1700℃),10mm/min-1. Intrinsic conductivity anisotropy of β-alumina demands that careful consideration is given to controlling the texture of the ceramic Na-S battery (Na(l)/β-al ...
وزارة التربية و التعليم العالي امتحانات شهادة الثانوية الع
... 1 mol of PCl 5 is introduced in a thermal reactor where the temperature could change from 100 ºC to 350 ºC. The decomposition of PCl 5 is followed by determining the density of the gaseous mixture relative to air (d), at different temperatures. The obtained results are given in the following table ( ...
... 1 mol of PCl 5 is introduced in a thermal reactor where the temperature could change from 100 ºC to 350 ºC. The decomposition of PCl 5 is followed by determining the density of the gaseous mixture relative to air (d), at different temperatures. The obtained results are given in the following table ( ...
Equilibrium chemistry
Equilibrium chemistry is a concerned with systems in chemical equilibrium. The unifying principle is that the free energy of a system at equilibrium is the minimum possible, so that the slope of the free energy with respect to the reaction coordinate is zero. This principle, applied to mixtures at equilibrium provides a definition of an equilibrium constant. Applications include acid-base, host-guest, metal-complex, solubility, partition, chromatography and redox equilibria.