If we were to determine the concentration of the potassium ferricyanide solution using coulometry, how long would it take to electrolyze all of the ions in 1 mL with an applied current of 0.02 A? Using the concentration :3.72*10^-5mM
If we were to determine the concentration of the potassium ferricyanide solution using coulometry...
Suppose a cell is placed in a solution with a high concentration of potassium and no sodium. How would the cellular sodium-potassium pump function in this environment? It would reverse the direction of sodium and potassium ions to move them against their gradients. It would stop moving ions across the membrane. It would move sodium and potassium ions across the membrane, but no ATP would be used. It would continue using ATP to pump sodium out of the cell and...
Need step by step solution to following: Suppose that you want to determine the concentration of an aqueous solution of iron(II) sulfate using titration. You decide to use the oxidation of iron(II) to iron(III) with permanganate, 〖MnO〗_4^-, as the oxidizing agent in acidic solution. You take advantage of the fact that the reaction is quite fast, and the permanganate exhibits an intense purple color, while the other reactants and products are essentially colorless Consequently, if you add a solution of...
A potassium hydroxide titrant is standardized using potassium hydrogen phthalate. What is the concentration of the titrant if 0.6082 g of KHP requires 38.17 mL to reach the phenolphthalein endpoint? Team Member: Collaborative Answer: 0.07826 M Solution: 0.6082 g KHC8H4O1 mol204.22 g KHC8H4O41 mol KOH1 mol KHC8H4O4= 2.978 x10-3 mol KOH concentration=solutesolution=2.987 x 10-3 mol38.17 mLx 1000 mLL= 0.07825 M What is the concentration of citric acid in an unknown sample if a 10.00 mL aliquot requires 42.78 mL of...
You want to determine the concentration of acid in a particular solution. To this end, you decide to titrate the acid with a standardized sodium hydroxide solution. You quickly throw together an approximately 0.1 M NaOH solution, and then you realize you need to know the exact concentration of this solution before you can use it for anything meaningful. 1. Using an acid-base titration, 30.65 mL of your NaOH solution were needed to neutralize 0.6923 g of KHP (potassium hydrogen...
1. A potassium hydroxide titrant is standardized using potassium hydrogen phthalate. What is the concentration of the titrant if 0.6082 g of KHP requires 38.17 mL to reach the phenolphthalein endpoint? 2. What is the concentration of citric acid in an unknown sample if a 10.00 mL aliquot requires 42.78 mL of the above standardized titrant to reach the phenolphthalein endpoint? 3. How many grams of potassium hydrogen phthalate should be used to standardize 0.200 M potassium hydroxide titrant in...
Q1. Based upon the figure wirh 10mM concentration, what is the limiting currebt in units of microamps? The limiting current is described by the red bar line. Q.2 Based upon the figure with 5 mM concebtration, what is the limiting current in units of microamps? The limiting current is labeled by the red bar line. Q.3 This Question refers back to the previous two questions. If a blank sample (conc. = 0 mM) yielded 0.0 microamps of current duribg the...
A chemist needs to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solution. He has a 0.1659 M standard sodium hydroxide solution. He takes a 25.00 mL sample of the original acid solution and dilutes it to 250.0 mL. Then, he takes a 10.00 mL sample of the dilute acid solution and titrates it with the standard solution. The endpoint was reached after the addition of 11.76 mL of the standard solution. What...
Please show all work. 1.) What is the concentration of potassium ions in 100. mL of a 0.21M solution of K3PO4? 2.) What volume of 0.150M iron (11) sulfate is required to produce a 250mL solution that is 0.045M iron (11) sulfate? 3.) What volume of 0.70M KOH is needed to neutralize 25.0mL of 0.55M HCl?
I need to: DETERMINE THE CONCENTRATION OF HYDROGEN PEROXIDE IN THE SOLUTION how ?? THEORY Titrimetry, or titrimetric analysis, is an example of a so-called classical method of analysis. Titrimetry is a convenient method of getting very small amounts of chemicals in to a reaction because the method involves the use of dilute solutions of reactants. Hydrogen peroxide reacts with potassium iodide according to the reaction given below: HB2BOB2B + 2HP+P + 2IP-P = IB2B + 2HB2BO (equation...
Solutions and Dilutions 1. What would be the percent (%) concentration of a solution that results from the combination of 115.0 grams of potassium nitrate with 0.320 L of water? Identify the solute and solvent of the solution 2. A solution is prepared by mixing together 76.40 mL of liquid ethanol (C2H4O) and 110.25 mL of water. Identify the solute and solvent of the resulting solution. What would be the percent (%) concentration of the solution? 3. How many grams...