chemistry
How advanced is this class. If it is very beginning, I would answer, .....H2SO4 ==> 2H^+ + SO4^2- So 0.4M = 0.8M H^+. If this is not a VERY VERY beginning class, that answer is not right. Why? Because the second ionization of H2SO4 is not 100% as is the first. .....H2SO4 ==...
Chemistry
No. You need to know the solubility rules. Here is a simplified set. It can't be d because there is no CO3 in the system. http://www.files.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html
Chemistry
Le Chatelier's Principle says that when a system in equilibrium is disturbed that the system will try to undo what we've done to it. So if you add acetate to it the system will try to use it. How can it do that. By shifting to the left. That increases the CH3COOH and i...
chemistry
pH = 10.17. pOH = 14-10.17 = 3.83 pOH = -log(OH^-) 3.83 = etc. OH^- = about 1.4E-4 but that's an estimate. ...........BH + H2O ==> BH2^+ + OH^- I..........x............0........0 C.........-y............y........y E.........x-y...........y.........y Kb = 7.8E-7 = (BH2^+...
chemistry
You are right that the anode is on the left and the cathode on the right. But the cell notation is written as they appear from left to right as you go from the anode, across the salt bridge, and to the cathode. In the cell you will have Pt on the left and Pt on the right. On t...
Chemistry
No, of course not. The correct answer is that bromide ion is oxidized. 2Br^- ==> Br2 + 2e so Br^- loses electrons and that is the definition of oxidation. Oxygen has no change in oxidation state; i.e., it is -2 in HNO3 and -2 in H2O and NO.
Chemistry
No, bromine is not oxidized but bromide ion is oxidized to bromine.
chemistry
mols HCl = M HCl x L HCl mols NaOH = mols HCl M NaOH = mols NaOH/L NaOH.
Chemistry
You ended up with a quadratic? 0.8mol/2L = 0.4 M ..........2NOCl2 ==> 2NO + Cl2 I.........0.40........0.....0 C..........-2x........2x....x E.......0.40-2x.......2x....x I ended up with a cubic equation but I found a cubic calculator on the web and it returned 0.00395 for C...
Chemistry
Those look right to me.
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