Write the chemical reaction when 0.5 ml of 0.1M K2HPO4 and 1.4 ml of 0.1M KH2PO4 is mixed together.
Write the chemical reaction when 0.5 ml of 0.1M K2HPO4 and 1.4 ml of 0.1M KH2PO4...
0.1M K2HPO4 and 0.1M KH2PO4 was used to make a buffer- calculate the ionic strength of the standard phosphate buffer solution with a pH of 6.64
Find the pH of each solution: 1. 30mL of 0.1M K2HPO4 mixed with 10mL of 0.1M KH2PO4 and 60mL of water; 2. 10mL of 0.1M K2HPO4 mixed with 30mL of 0.1M KH2PO4 and 60mL of water; Phosphoric acid, H3PO4 1st Ka&pKa 7.1 x 10-3 2.15 2nd Ka&pKa 6.3 x 10-8 7.20 3rd Ka&pKa 4.5 x 10-13 12.35
Mix 0.05M KH2PO4 and 0.05M K2HPO4 in the following volumes (ml) in 100mL beakers or cups: **this only like 5 cups to save time** Cup K2HPO4 (ml) KH2PO4(ml) 1 0 50 2 1 49 3 5 45 4 10 40 5 20 30 For each cup calculate these four values: Concentration of K2HPO4, Concentration of KH2PO4, % of total phosphate in the form of K2HPO4 and log[K2HPO4/KH2PO4] Please show your work for each calculation!! you can just solve for one...
A solution is made by mixing 50 mL of 2.0 M K2HPO4 and 25 mL of 2.0 M KH2PO4. The solution is diluted to a final volume of 200 mL. What is the pH of the final solution?
6. What is the pH of a buffered system made by dissolving 17.42 g of KH2PO4 and 20.41 g of K2HPO4 in water to give a volume of 200.0 mL? The Ka2 for dihydrogen phosphate is 6.2 x 10-8 and the equilibrium reaction of interest is H2PO4 (4) + H20 <-> H30* ( HPO4 (4) 7. Determine the pH of a 0.188 M NH3 solution at 25°C. The Kh of NH3 is 1.76 x 10-5. 8. Calculate the pH of...
Write a balanced reaction for each reaction. 0.4M NaI + 0.1M KMnO4 + 3M H2SO4 0.4M NaI + 0.1M FeCl3 + 3M H2SO4 0.4M NaI + 0.1M KMnO4 + 6M NaOH
Write a balanced chemical equation for the acid–base reaction that occurs when solutions of HC2H3O2 and NH3 are mixed. (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (s).
Write down the correct, ionic, net ionic equation for the reaction that occurs when solutions of Pb(NO_3)_2 and NH_4Cl are mixed like a given chemical reaction. Also, name the spectator's ions. Ionic Equation: Net Ionic Equation: Spectator's Ion: A 50.0 ml sample of 0.436 M NH_4NO_3 is diluted with water to a total volume of 250 0 mL What is the ammonium nitrate concentration in the resulting solution?
In a coffee cup calorimeter, 50.0 mL of 1.5 M NaOH and 60.0 mL of 1.4 M HCl are mixed at 25.0oC. After the reaction, the temperature is 34.1 oC. Assuming all solutions have a density of 1.00 g/cm3 and a specific heat capacity of 4.18 J/oC g, what is the enthalpy change (kJ) for the reaction?
When 1.50 mL of 3.5-M Barium chloride is mixed with 2.50 mL of 0.65-M sodium sulfate, a precipitate forms. a. Write balanced chemical, ionic and net ionic equations for the reaction, including phase labels. b. Calculate the theoretical yield (in grams) of the precipitate and identify the limiting reactant. c.Calculate the grams of the reactant in excess (left over) after the reaction is complete.