FEFU State and municipal property management Spak Aleksandr Sergeevic Computer Exam - State and municipal property management - Udovletvoritel_no 1...
136. Is it possible to prepare a solution containing simultaneously the following pairs of substances: copper (II) nitrate and sodium sulfate; barium...
149. A solution consisting of benzene and toluene is close to ideal in properties. Calculate the volume concentration of vapors over the solution at...
182. Calculate the redox potential of the Fe3 | Fe2 at room temperature, if the ratio of the activities of the oxidized and reduced forms a(Fe3) ...
192. Show whether it is possible to carry out the oxidation reaction of chloride ions with cerium (IV) ions in standard states of substances at room...
202. Calculate the equilibrium constant of the reaction 2I- H2O2 2H = I2 2H2O at room temperature.
212. Calculate the equilibrium concentrations of iron (III) ions and cyanide ions CN- in an aqueous 1.0 mol/l solution of potassium ferricyanide...
242. Show whether a precipitate of silver iodide AgI is formed if an equal volume of 0.2 mol/l of an aqueous solution of sodium iodide is added to an...
Derive a formula to calculate and calculate the pH of the following solutions: 17. 0.6M ammonium hydroxide solution.
2. For the following buffer mixtures, derive the formula and determine the pH. How does the pH change when a given amount of a) NaOH, b) HCl is added...
4. Will a precipitate of sulfide form when solutions of the following salts are saturated with hydrogen sulfide: 4. 0.01M MnSO4 at pH=4.
86. Surface energy and surface tension. The structure of the surface layer. internal pressure. Surface tension, definition, units of measurement...
3. The normality of a solution of potassium permanganate is 0.02500 mol/dm3. What are its titers for Fe and H2O2?
3. What compounds are called freons and what is the reason for their widespread use? Why are freons considered the most dangerous compounds for the...
12k. Construct titration curves and select indicators: j) 0.2 N KCN 0.2 N HCl solution.
105. Treat m-toluidine with sodium nitrite in the presence of sulfuric acid. Write the reaction equations for the interaction of the resulting...
9b. How will C(t) CO2(g)↔2CO(g) affect the equilibrium of a heterogeneous system? ΔН= 119.8 kJ specified b) adding C(t)
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