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Calculate the pH of a mixture containing 50 mL of 0.1M NaH2PO4 and 150 mL of 0.1M Na2HPO4. How many mL of 0.1M H3PO4 should be added to the above buffer to lower the pH by one unit?
Please explain your reasoning! I have the correct answer.
Why would the cell potential be higher with the addition of 6 M Na2S solution to .001 M of CuSO4 (compared to 6 M NH addition to .001 M CuSO4)
Assume that the buret represenst H+ ions, the flask represents OH- ions, and you are carrying out a titration of the base with the acid.
If at 25 degrees celcius the partial pressure of oxygen in the iar diffusing through its cathode is 0.22atm, what is the cell potential (Ecell
The buffer has a concentration of 150 mMol ( 150 mM of KH2PO4 / 150 mM K2HPO4. The pKa of the drug ephedrine is 9.6. Will the drug have a negative, positive, or neutral?
What mass of trisodium phosphate is required to prepare 250.0 ml of a solution which is 0.30 M in sodium ion
A radioactive sample contains 1.85 g of an isotope with a half life of 3.5 days. What mass of the isotope will remain after 5.8 days. (Assume no excretion of the nuclide from the body) M=?
Suppose 8.26 g of solid Mg(OH)2 is added to 36.1 mL of 0.488 M H2SO4 solution. What will the concentration of Mg2+ be when all of the acid has been neutralized. How many grams of Mg(OH)2 will not have dissolved.
How many moles of gas are there in a gas-filled balloon, which has a volume of 67.0 L at a pressure of 742 mmHg and a temperature of 25.0°C?
if 12.5 g of ironiii oxide rust are pro- duced from 8.74 g of iron how much oxygen gas is needed for this
For the reaction Cu(s) + 2 Fe3+(aq) Cu2+(aq) + 2 Fe2+(aq), the equilibrium constant is Kc = 3.7×10^14 at 25 oC. Suppose that excess Cu(s) is added to 1.0 L of 0.015 mol L^-1 Fe(NO3)3(aq), with no change in volume. What is the equilibrium concent..
What volume of a 15.0% by mass NaOH solution, which has a density of 1.116 g/mL, should be used to make 5.40 L of an NaOH solution with a pH of 10.0
What is the product of the reaction of 2-methycyclohexanol under acidic conditions? What other elimination product(s) might be produced?
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