Computing the equilibrium constant Kc
Consider the equilibrium: 2 A + B <----> 2 C You prepare a mixture with initial concentrations [A]0 = 0.03 mol/L, [B]0 = 0.023 mol/L, and [C]0 = 0. You wait until the mixture reaches equilibrium, and then you measure the concentration of C: [C]eq = 0.013 mol/L. From your experiment compute the equilibrium constant Kc of the ...continues
What are two health effects and two commonly used treatment technologies for 1. Chromium 2. MTBE 3. Sulfate? Chromium: Health effects 1. 2. Treatment Technologies 1. 2. MTBE Health effects 1. 2. Treatment Technologies 1. 2. Sulfate Health effects 1. 2. Treatment Technologies 1. 2.
Ionization energy calculations
The problems ask to find the ionization energy(kJ/mol) for a chemical process given the process and the wavelength. An example is "N2 + 80.1 (wavelength in nm) -> positive charged N2 + e-" Another is 02 + 99.3 -> positive charged 02 + e-
Chlorine, ozone and ultraviolet light
Describe and compare disinfection using chlorine, ozone and ultraviolet light by listing the advantages and the disadvantages of each disinfectant in a table.
The question asks for the ionization energy(kJ/mol) for the following chemical process given the wavelength O + (wavelength) -> O(positively charged) + e(negative charge) Wavelength = 91.2 (nm)
Concentration of atmospheric CO2
If the concentration of atmospheric CO2 were to double from its current value of 330 ppm, what would be the calculated pH of rainwater assuming that CO2 was the only acidic input? Please show step by step.
Atmospheric burden of carbon dioxide
Given that the atmospheric burden of carbon dioxide increases by about 3.8 Gigatonnes annually, calculate the annual increase in its concentration on the ppm scale. Note that the atmospheric mass = 5.1E21g; air's average molar mass = 29.0 g mole-1. Please show step by step.
Solubility Rules applied to various reactions
Use the Solubility Rules to write net ionic equations for the reactions that occur when solutions of the following are mixed. a) K2S + ZnSO4 b) K2CrO4 + NiCl2 c) CsOH + FeCl3 [2] d) CuSO4 + Pb(ClO4)2 e) FeSO4 + K3PO4 f) FeCl2 + TlNO3 g) (NH4)2CO3 + Ni(ClO4)2
Please show how to solve. Calculate the pH of CO2-saturated water at 25 degrees C, given that the CO2 concentration in air is 338 and that for carbon dioxide the Henry's Law constant KH=3.4E-2 mol L-1 atm-1 at 25 degrees C. Furthermore, the ionization constant, Ka, for H2CO3 has a value of 4.5E-7 mol L-1 at this temperature. ...continues
I have looked at a solution and was not able to come up with a correct answer. Please show how to solve this problem: What is the calculated value of the partial pressure(atm) of O2 in acid mine water of pH 2.700, in which [Fe3+] = [Fe2+]? Hint: Application of the Nernst Equation
