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Oxalic acid (H2C2O4) is a useful primary standard for standardizing solutions such as potassium permanganate (KMnO4). In a particular standardization experiment 45.00g of oxalic acid, is titrated with 460.00mL of permangante solution. What was the concentration (mol/L) of the permanganate solution? Submit answers correct to two decimal places.
5H2C2O4 + 2MnO4- +6H+ ----> 10CO2 + 2Mn2+ + 8H2O
A buffer contains significant amounts of acetic acid and sodium acetate. Write an equation showing how this buffer neutralizes added acid and added bases
calculate the amount of heat necessary to raise the temperature of 53.4 grams of ice at -50.0 degrees celsius to water
A flask contains 0.180 of liquid bromine br2, . Determine the number of bromine molecules present in the flask.
The total molarity of acid and conjugate base = 0.100M. A boy adds 4.20 milliliters of a 0.370 M solution to the beaker. Determine how much will the pH change?
A 800 mL sample of a saturated aqueous solution of calcium oxalate, CaC2O4, at 95 degrees C is cooled to 13 degrees C. How many milligrams if calcium oxalate will precipitate?
A mixture of two miscible solvents that may be used as the solvent for a recrystallization experiment would be which of the following
4. How many grams of NaNO3 would you add to 250g of H2O in order to prepare a solution that is .500 molal in NaNO3?
Given the values of DHfo in kJ/mol and So in J/mol K given below, calculate the value of DGo in kJ for the reaction at 298 K
How many grams of oxygen are collected in a reaction where 235 mL of oxygen gas is collected over water at a temperature of 25 ^circ {rm C} and a total pressure of 704 torr?
Calculate the effective charges on the I and Br atoms in IBr, in units of the electronic charge e.
If the reaction mixture initially contains only O2(g) and F2(g), then at equilibrium, the reaction mixture will consist of essentially only OF2(g).
A 0.100 M sample of NiSO4 gave an absorbance of 0.60 at 600 nm in a 1 cm cuvette. What is the nickel concentration of a solution giving an absorbance of 0.20 in the same cuvetter at the ame wavelength
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