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You standardize a solution of KMnO4 by titration with a solution of oxalic acid. You weight out 1.378g H2C2O4•2H2O and dissolve it with deionized water in a 25.00 mL volumetric flask.
1. Explain what is the molarity of this oxalic acid solution?
2. Explain what is the balanced overall net-ionic equation for the reaction between oxalic acid and the permanganate ion, MnO4-?
3. Explain what is the molarity of the KMnO4 solution if it requires 15.42 mL of KMnO4 solution to reach the endpoint in a titration with 10.00 mL of the oxalic acid solution?
A certain elixir is 92 proof. A proof is twice the volume percentage of alcohol in a blend. Ethanol's structural formula is CH3CH2OH with a molar mass of 46 grams/mole. The density is .79 g/ml. How many liters of elixir must one have in order to h..
To extract Al from glass, 200 mL of EDTA were mixed with .50g of glass particles and allowed to equilibrate over time. The Al concentration of the solution was found to be 5.25 mcM. If the glass contained .40 wt% Al, what percent of Al was extract..
What is the equilibrium concentration of chloroacetic acid, HC2H2O2Cl, in a solution prepared by dissolving 0.0277 mol of HC2H2O2Cl in 1.00 L of water
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Nitrosyl bromide, NOBr, is 34 percent dissociated at 25 deg. C and the total pressure is 0.25 atm. Calculate kp and kc for the dissociation.
A 643 mL gas sample at STP is compressed to a volume of 285 mL, and the temperature is increased to 26C. What is the new pressure of the gas in Pa? Answer in units of Pa.
what is the quantity in grams of formic acid and sodium formate necessary to make 500 mL of a buffer that has a formic acid concentration of .75 M and a sodium formate concentration of .75 M?
calculate the change internal energy (E) for a system that is giving off 45.0kJ of heat and is performing 855J of work on the surroundings.
What is the volume of the water displaced? (State the correct number of significant digits.) What is the uncertainty in this value?
The mass of a golf ball is 45.9g . If it leaves the tee with a speed of 75.0m/s , what is its corresponding wavelength
A student starts with 55.0701 grams of iron (lll) nitrate nonahydrate, Fe(NO3)^3 * 9 H20 and dissolves this in 250 mL of water. This solution is diluted to the mark on a 500 mL volumetric flask.
Doing a kinetics lab with HCL, Acetic Acid and Methlyene Blue. The reaction rate using spectrotophetry. Directions say to use the initial slope and divide by the extinction coefficient to get the reaction rate.
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