...........HA --> H^+ + A^- I.......0.273.....0......0 C.........-x......x......x E.......0.273-x...x......x Ka = (H^+)(A^-)/(HA) Substitute the E line and solve for x = (H^+). Then %ion = [(H^+)/0.273]*100 = ?
What kind of heating devices do you have? Write them down. Place to the right of the unit the temperatures available with them. Then match these to boiling point, reflux temperature, flammability, etc of each of your questions. For example, you don't want to heat diethyl e...
It's really quite simple to balance them. First, because the computer doesn't write subscripts and superscripts as we wish, this is my format. The first number is the atomic number. That is followed by the symbol of the element and that is followed by the mass number. ...
In a not so esoteric statement, Le Chatelier's Principle says that an equation in equilibrium tries to UNDO what we do to it. Therefore, if we take away N2 the reaction will shift so as to increase N2. That means it shifts to the left which means H2 increases. It also mean...
See the freezing point question.
Not much to go on here. What are you studying? What came before and after?
Just like you other osmotic pressure problems BUT i for CaCl2 = 3 so you use pi = iMRT.
You need to find and use the arrows. 2KI + Pb(NO3)2 ==> PbI2 + 2KNO3 mols KI = M x L = ? mols Pb(NO3)2 = M x L = ? This first part is a limiting reagent (LR) problem. Convert mols KI to mols PbI2. Convert mols Pb(NO3)2 to mols PbI2. The smaller number of mols will be the co...
This can't be answered. You didn't include the concn and mL HCl. I worked the complete problem yesterday so it should be on this site somewhere.
%m/m = (g solute/g solution)*100 = (5.000 Sn/100 g solution)*100 = ?