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Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution of hydrogen peroxide,H2O2 , can be titrated against a solution of potassium permanganate,KMnO4 . The following equation represents the reaction: 2KMnO2 +H2O2 +3H2SO4----> O2(g) +2MnSO4 + K2SO4 +4H2O(l) A certain amount of hydrogen peroxide was dissolved in 100.mL of water and then titrated with 1.68 M KMnO4. How much HxO2was dissolved if the titration required 19.3mL of the KMnO4 solution?
Calculate the pH of a solution that is 0.50 M in HF (Ka= 7.2 x 10-4) and 0.60 M in NaF. The answer is 3.22. Please show me how to get the correct answer.
The solution has a vapor pressure of 262 . Pure pentane and hexane have vapor pressures of 425 and 151 , respectively, at room temperature.What is the mole fraction of hexane? (Assume ideal behavior.)
If 13.57 g of copper(II) chloride react, what is the maximum amount of precipitate that could be formed?
Calculate the heat energy released when 19.6 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point.
Determine the molar solubility for Copper (II) hydroxide in (a) a water solution at 25 degrees Celsius, and (b) in a solution having a pH of 8.75 at 25 degrees Celsius.
Find the formula of a compound using stoichiometry and ideal gas equation and Deduce from these data the corresponding equation and write formulas for the oxide and sulfate of M .
Nitrogen forms several gaseous oxides. One of them has a density of 0.869 g L-1 measured at 764 mmHg and 150°C. Write the formula of the compound.
What volume of water, in gallons would be required to fill a 750 mL container? 1 liter = 0.265 gallon Calculate the volume of millimeters for each of the following
Describe all the symmetry planes in the staggered conformation of ethane. Draw a figure and arrows to show any rotational symmetry axes in the staggered conformation of ethane.
Which of the following changes to a voltaic cell would cause an increase in potential (i.e., more positive Ecell)
It is known that the Co2+-ligand complex obeys the Beer-Lambert Law. Calculate the mass percentage of the cobalt in the original sample.
the specific heat of lead is 0.03 cals/J* degree C. If all the heat given up by the lead is used to melt the ice, how much ice is melted when the temperature drops to 0 degrees Celsius?
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