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Which of the following statements is true concerning the electrochemical cell depicted below?Ca | Ca2+(aq) || Rb+(aq) | RbCa2+(aq) + 2e- Ca(s); E° = -2.87 VRb+(aq) + e- Rb(s); E° = -2.98 V Answer A. The cell reaction is spontaneous with a standard cell potential of 5.85 V. B. The cell reaction is spontaneous with a standard cell potential of 0.11 V. C. The cell reaction is nonspontaneous with a standard cell potential of -0.11 V. D. The cell is at equilibrium. E. The cell reaction is nonspontaneous with a standard cell potential of -5.85 V.
How many liters of chlorine gas, measured at STP, would be produced by the electrolysis of molten sodium chloride using a current
30.0 mL of 0.150 M CH3CO2H are titrated with 0.150 M NaOH. What is the pH of the solution after 15.0 mL of NaOH has been added. The Ka for acetic acid is 1.80 x 10-5
an unknown gas composed of a diatomic molecule effuses at a rate that is only 0.355 times as fast as that of oxygen gas
How much Tris (1.0 M) (MW: 121.1 g/mol) and EDTA (0.2M) (MW: 372.2 ) solutions are used to prepare a 100ml of TE buffer (10mM Tris and 1mM EDTA)
calculate the heat released when 3.89 l of cl2g with a density of 1.88 gl reacts with an excess of sodium metal at
The specific heat of the product is 4.06J/g deg. C and the density is 1.01g/mL. a. Calculate the heat of the reaction, q, and the enthalpy per mole.
Calculate the pH of a solution prepared by adding 20.0 mL of 0.100 M HCl to 80.0 mL of a buffer that is comprised of 0.25 M NH3 and 0.25 M NH4Cl. Kb of NH3 = 1.8 x 10-5.
An equilibrium mixture of propanoic acid (propionic acid), CH3CH2COOH, and its conjugate base has a pH of 4.87. Draw the form that predominates after H3O is removed from the equilibrium mixture
the pH of solution B is 9.2, then solution B has how many fold more or less H+ ions than does solution A?
Use the ideal gas equation of state to estimate the molar volume in m3/mol and the density of ari in kg/m3 at 40 C and a gauge pressure of 3.0 atm.
How many possible isomers are there of an octahedral complex having the formula M(ABC)(NH3)(H2O)Br where ABC is the tridentate ligand H2N-C2H4-PH-C2H4-AsH2
A solution containing 3.47mM X (analyte) and 1.72 mM S (standard) gave peak areas of 3473 and 10222, respectively, in a chromatographic analysis. Then 1.00ml of 8.47mM S was added to 5.00ml of unknown X, and the mixture was diluted to 10.0ml. This..
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