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Problem- A buffer solution is prepared by dissolving 3.5 mol of HCN (Ka = 4.0 x 10-10) and 2.71 mol of KCN in enough water to make 0.5 L of solution. What is the pH of this solution? Answer to 3 significant figures.
I need expert help to solve the above question. Show each and every step.
If the reaction between iron (III) ion and thiocyanate ion yielded an equilibrium concentration of .30 M for each of these ions, what is the equilibrium concentration of the red iron (III)-thiocyanate complex
Microscopic representations for four different solutions containing bases are shown below. What are the relative strengths of the bases shown in I-IV?
A gaseous mixture of O2 and N2 contains 38.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 365mmHg
What is the concentration of sodium in a river water sample that reads 115.0? the correct answer is: 17.9 ppm. how to obtain this answer since the plot is not linear.
The enthalpy of combustion for propane is -2044 kJ/mol. How many liters of propane (at STP) must be burned in order to convert 431 grams of ice initially at -12°C to liquid water at 70°C?
If the standard deviation of your pipet is 0.018 mL, what is the chloride concentration ppt (W/V) of you sample?
sodium hydroxide to make sodium phosphate and water. How many L of the H3PO4 solution will react with 0.281 L of the NaOH solution? Give your answer to 3 decimal places.
1.91 g H2 is allowed to react with 10.2 g N2, producing 1.17 g NH3. (a) What is the theoretical yield for this reaction under the given conditions. (b) What is the percent yield for this reaction under the given conditions
Draw the structure of the product that is formed when 1-pentyne undergoes reaction with two equivalents of HCl.
Why do primary alkyl halides undergo SN2 substitution reactions more rapidly than do secondary or tertiray alkyl halides?
What is the cell potential at 25 degrees C for the following galvanic cell? Pb (s) | Pb^2+ (1.0M) || Cu^2+ (1.2x10^-4 M) | Cu (s). If the Pb^2+ concentration is maintained at 1.0 M, what is the Cu^2+ concentration when the cell potential drops to ze..
4.5 L of Mg(OH)2 solution was titrated with 5.03 mL of 0.200 M HCl. Calculate the the molarity of Mg(OH)2 solution and the ksp.
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