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Buffer Chemistry Question! Please help!?
1) Find the pH of a solution that is 0.12 M in nitrous acid and 0.15 M in sodium nitrate. Answer in units of pH. (Ka of nitrous acid = 4.5 x 10^-4)
2)Now we add 0.15 mol of NaOH to 1.00 liter of the solution that was given in part 1. What is the pH of the solution after the NaOH addition?
3)Now, you're given only 500 mL of the buffer described in part 1 above. To this, 121 mL of 0.50 M HCl is added. What is the new pH of this new solution?
a sample containing 4.80 g of gas has a volume of 15.0 l. pressure and temperature remain constant. what is the new
you are given a stock solution of edta at a concentration of 5mm how would you dilution of edta with a final
The energy of the electron in the lowest level of the hydrogen atom (n=1) is -2.179×10-18 J. What is the energy of the electron in level n=6
Question- Why is it important to have methods like Gabriel synthesis, reduction of nitriles, reduction of amides and reductive amination to make specific primary, secondary and tertiary amines; that is Why can't we just use Sn2 reactions to make t..
What volume (in mL) of water must be added to a 1.96 M solution of potassium hydroxide to make a 50.8 mL of a 0.625 M solution? Assume the volumes are additive.
Describe how a linear sequence of amino acids gives rise to the three-dimensional structure of proteins.
particular amino acid in an ion exchange chromatography column. What is the peak width after the amino acid has migrated 100 cm?
Consider the thorough stirring of 0.2 mols Na3PO4 (s) into 1 Liter of 0.2 M H4NHC2O4. For this system write the correct equation for each B/L acid-base rxn of consequence occuring on system prepartion.
State a balanced chemical equation for the reaction that occurred. Remember that halides are present in solution as sodium salts (Example sodium bromide)
At a certain temperature and pressure, one liter of CO2 gas weighs 1.95 g. What is the mass of one liter of C2H6 gas at the same temperature and pressure
Write balanced complete ionic equation and a balanced net ionic equation for the following: Express your answer as a chemical equation. Identify all of the phases in your answer.
How much HCl gas can be produced at STP by reacting 198 g of NaCl with excess H2SO4?NaCl + H2SO4 ! NaHSO4 + HCl.
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