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Suppose that you have 0.500 L of each of the following solutions, and an unlimited supply of water. (Note: C9H7NHBr is a salt containing the ions C9H7NH+ and Br- and C9H7N is quinoline, an organic base with pKb = 6.24 at 298 K. If you like, you may represent C9H7NH+ as HB+ and C9H7N as B.) 0.113 mol L-1 C9H7NHBr (aq) 0.104 mol L-1 HBr(aq) 0.122 mol L-1 NaOH(aq) (1a) Provide simple instructions for preparing 1.00 L of a solution having pH = 7.00 at 298 K. Your instructions should include the volumes of the solutions required. (1b) What is the buffer capacity of the resulting solution? (The buffer capacity is the number of moles of NaOH that must be added to 1.0 L of solution to raise the pH by one unit
A solution contains 0.37 M Ni(NO3)2 and 0.37 M Cu(NO3)2. Can the metal ions be separated by slowly adding Na2CO3? Assume that for successful separation 99% of the metal ion must be precipitated before the other metal ion begins to precipitate, and..
Which compound has the smallest molar mass?
Calculate w (in kJ) when 390 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 426 K.
The amount of H2O2 in 15.8g of hair bleach was determined by titration with a standard potassium permagnate soln. MnO4-(aq)+H2O2(aq)--Mn2+(aq)+O2
A rigid plastic container holds 1.00 L methane gas at 630 torr pressure when the temperature is 20.3°C. How much more pressure will the gas exert if the temperature is raised to 44.3°C?
What is the enthalpy change for the combustion of 12.5g C4H10 in excess oxygen? C4H10 (g) + 13/2 O2 (g) ------? 4 CO2 (g) + 5 H2O (g) H0 = -1895 kJ
A pressure of 0.600 atm of nitrosyl chloride is sealed in a flask and allowed to reach equilibrium. If 27.0% of the NOCl decomposes, what is the equilibrium constant for the reaction?
Ethylene is produced by the dehydrogenation of ethane. If the feed includes 0.5 mol of steam(an inert diluent) per mole of ethane and if the reaction reaches equilibrium
What minimum pressure must be supplied to a reverse osmosis water purification system in order to overcome the osmotic pressure in water that is 1.24 M in total dissolved ions at 16 C?
convert back to molarity. And since it is a strong acid, you would just take the -log(KOH or OH-) then subtract this number from 14. From this I get 11.85, however the answer is 10.98. Can somebody tell me where I'm going wrong in detail?
How does boiling point relate to freezing in this scenario. would the same one with the higher bioling point also have a lower freezing point. why
(a) Calculate the percent ionization of 0.00190 M acetic acid (Ka = 1.8e-05). % ionization = % (b) Calculate the percent ionization of 0.00190 M acetic acid in a solution containing 0.0710 M sodium acetate. % ionization = %
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