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Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, H2O2 a solution of hydrogen peroxide, , can be titrated against a solution of potassium permanganate, KMnO4. The following equation represents the reaction:
2KMnO4(aq) + H2O2(aq) + 3H2SO4 (aq) ---> O2(g) + 2MnSO4(aq) + K2SO4(aq) + 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 H2O2 was dissolved if the titration required 22.3mL of the KMnO4 solution?
Some liquid samples cannot be injected directly into an HPLC system because they could either damage the column or the HPLC system. For these samples, solid phase extraction (SPE) is used prior to analysis. Explain SPE
2NO(g) + O2(g) 2NO2(g) Given that we start with 0.035M NO(g) and 0.035M O2(g) AND end with 0.012M NO2.
What is the value of Kc for the decomposition of ammonium carbamate into ammonia and carbon dioxide?
How many grams of methane must be combusted to heat 1.15 of water from 26.0 to 89.0, assuming as a product and 100% efficiency in heat transfer
The activation energy for the diffusion of car- bon in chromium is 111,000 J/mol. Calculate the diffusion coefficient at 1100 K (827??C), given that D at 1400 K (1127??C) is 6.25 ?? 10??11 m2/s.
A nonmetal oxide dissolves in water to give an acid. Show this for gaseous carbon dioxide by writing a balanced chemical equation. (b) A metal oxide dissolves in water to give a base. Show this for solid potassium oxide by writing a balanced chemi..
which of the responses includes all of the following that can form hydrogen bonds with water molecules
A beaker with 1.90×10 2 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100.
iron has a reported average atomic mass of 55.85 amu. if iron has two isotopes one of which has 29 neutrons and an
If the mixture is ignited and the methane completely combusts, producing carbon dioxide (CO2) and water (H2O), calculate the mass percent, the mole fraction, and the partial pressure of CO2 in the container after cooling back down to the initial t..
Calculate the volume of 8.0g of oxygen gas if it has a temperature of 552 K, and a pressure of 5 atmosheres
Calculate empirical formula of this compound & molecular formula and calculate the molality of solution of sulfuric acid?
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