concentrations

  1. E

    Finding activities and concentrations?

    Alright, So I have this problem: http://i.imgur.com/C8zCeuD.png. And I believe I've been able to successfully answer part A and B. However, on C, I've been completely lost for the last hour or so. How do I find the concentrations of these products, when I know that the activity coefficients...
  2. S

    Equilibrium concentrations and total pressure question.

    I understand about 90% of how to do this question. The only problem I'm having is understanding how volume comes into the calculations. My solution manual has it where; 0.186mol / 2.16L to find the initial concentration for H3CON and then volume is not brought into calculations of finding x...
  3. D

    Concentrations confusion

    Hi, I am meant to be following a GAG purification protocol from a paper but I dont understand how to make 2 solutions. The paper says "and trichloroacetic acid was added to a final concentration of 5%." Then it says "Three volumes of 5% potassium acetate in ethanol". I don't understand how...
  4. I

    finding ion concentrations of solution in equilibrium

    An excess amount of silver chloride is added to a beaker of 2 M sodium cyanide. Calculate the concentration of all ions, other than OH- and H+, that are in solution once the system reaches equilibrium. (Hint, there should be 5 other ions present) Please explain through your answer!! I'm really...
  5. R

    Calculating pH from deltaG° and Ion Concentrations

    I've been working on this one for a few days, and I just cant seem to get the right answer. Consider the reaction I2(s) --> I- (aq) + IO3- (aq) Balanced= 3I2 + 6OH- --> 5I- + IO3- + 3H2O deltaG°= -153.8 kJ/mol The question: What pH is required for the reaction to be at equilibrium at 298 K...