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In the chemical process called electron transfer, an electron is transferred from one atom or molecule to another. A simple electron transfer reaction is
A(g) + A(g) → A+(g) + A-(g)
In terms of the ionization energy and electron affinity of atom A, what is the energy change for this reaction? For a representative nonmetal such as chlorine, is this process exothermic? For a representative metal such as sodium, is this process exothermic?
In the laboratory we may prepare a sodium hydroxide solution by dissolving 2.0 grams of sodium hydroxide into enough DI water to give a total volume of 500ml. What are the [OH-], the [H3O+] and the pH of the resulting solution?
Calculate the ph at the equivalence point for titrating 0.170 solutions of each of the following bases with 0.170 M HBr.
a 70g piece of ice at 0c is added to a sample of water at 6 c all of the ice melts and the temp of the water decreases
In the following exothermic chemical reaction, which stress will cause an equilibrium shift that favors the formation of more products. CH4 (g) + 2O2 (g) image from custom entry tool CO2 (g) + 2H2O (g)
Arrange these aqueous solutions, each 10% by mass in solute, in order of increasing freezing point and boiling point. Explain your reasoning.
Nitrogen froms a trifluoride, NF3, but Nf5 does not exist. For phosphorous, both PF3 and PF5 are known. Write Lewis structures for NF3, PF3 and PF5 discuss possible explanations for the fact that PF5 is stable,
For each of the following reactions indicate which substance is oxidized and reduced. Which substance is the oxidizing agen and which is the reducing agent
Problem- The Ka of a monoprotic weak acid is 8.49x10^-3. What is the percent ionization of a 0.189M solution of this acid
The CaC2O4*H2O precipitate is not completely air-dried when its mass is determined. Will the reported mass of the limiting reactant in the original salt mixture be reported too high or too low
A sample of hydrogen gas is mixed with water vapor. The mixture has a total pressure of 755 Torr and the water vapor has a partial pressure of 24 Torr. What amount of hydrogen gas (in grams) is contained in 1.55 L of this mixture at 298 K?
Calculate the 1/2 life for the decomposition of co2 which is first orderwithnrespect to co2 at 1000degree k with k=1.8x10to-13degree sec
This solution was back-titrated with a 0.0440 M Ga3 solution until all the EDTA reacted, requiring 12.0 mL of the Ga3 solution. What was the original concentration of the V3 solution?
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