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A voltaic cell is constructed with two silver-silver chloride electrodes, each of which is based on the following half-reaction: AgCl(s) + e- ---> Ag(s) + Cl-(aq). The two half-cells have [Cl-] = 0.0150 M and [Cl-] = 2.55 M, respectively. (a) which electrode is the cathode of the cell? (b) what is the standard emf of the cell? (c)what is the cell emf for the concentration given? (d) For each electrode, predict whether [Cl-] will increase, decrease, or stay the same as the cell operates.
the reaction between c2h4 and hbr to form c2h5br is carried out in a continuous reactor. the product stream is analyzed
The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride produced 36.5 {rm g} of sodium upon decomposition. How much fluorine (in grams) was formed?
A 45.8 mL sample of a 5.8 M KNO3 solution is diluted to 1.00 L. What volume of the diluted solutions contains 15.0 g of potassium nitrate
A phosphate buffer solution contains 0.08 M K2HPO4 and 0.12 M KH2PO4. pKa values for H3PO4 are 2, 6.8, and 12.2. Compute the concentration.
What is the pH of a solution in which 323 mL of HCl(g), measured at 26.8 degrees Celsius and 1.02 atm, is dissolved in 1.5 L of aqueous solution?
What are the differences between alkenes and alkynes
Assume a wastewater contains a high soluble Cu II concentration. Determine the pH where the minimum solubility of Cu(OH)2 occurs, assuming a constant total nitrogen (NT) concentration (NH4+ and NH3) of 100 mg/l as N. At this pH, what is the total sol..
The solubility of N2 in blood at 37°C and at a partial pressure of 0.80 atm is 5.6 10-4 mol/L. A deep-sea diver breathes compressed air with the partial pressure of N2 equal to 3.6 atm.
Calculate (a) the mean potential energy and (b) the mean kinetic energy of an electron in the ground state of a hydrogenic atom
Electrophilic Substitution, Which compound is more reactive toward electrophilic substitution (e.g., nitration)? Explain you reasoning.
What would be the effect on the results of mistakenly adding 2.43 x 10^-3g Mg to 4.0mL of 0.1M HCl, rather than to 4.0mL of 1.0M HCl as instructed
Draw Lewis structures of the four molecules and/or ions with the formulas given below and figure out which two of these are isoelectronic with each another.
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