what is the concentration of potassium dichromate in a solution prepared as 20mg/2ml of 6M sulfuric acid using 0.1015g of potassium dichromate
Molar mass of potassium dichromate = 294 g/mol
moles of potassium dichromate = 0.1015/294 = 3.45*10-4
Volume of the solution = 2 ml = 2/1000 = 0.002 L
Molarity = moles of solute / Volume of solution ( L)
molar concentration of potassium dichromate = 3.45*10-4 / volume (L)
= 3.45*10-4/0.002
= 0.1725 M
what is the concentration of potassium dichromate in a solution prepared as 20mg/2ml of 6M sulfuric...
True or false: Oxidation of a monoalkylbenzene with potassium dichromate and sulfuric acid will yield benzoic acid.
need help b) Potassium dichromate K2Cr207 absorbs light at a wavelength of 345nm. A solution of potassium dichromate with chromium concentration of 40.0mg/L gave an absorbance of 0.412 when measured using a 1cm cell. What is the molar absorptivity (give units) of potassium dichromate K2Cr207 at this wavelength? (hint: need to convert concentration to moles/L)
A 1.20M solution of K3PO4 is prepared. What is the concentration of potassium ion in mol/L? What is the concentration of phosphate ion in mol/L?
11. To determine the concentration of a solution of sulfuric acid, a chemist titrates the solution with aqueous potassium hydroxide. She finds that 21.4 mL of 2.50 M aq. KOH is required to neutralize 10.0 mL of aq, HSO a. Write the balanced equation for this neutralization reaction b. What was the concentration of the H2SO4 solution?
2) ( ) An acidic potassium dichromate can be used to titrate a solution of iron(II) ions since it reacts according to the following equation: Cr2O72 (aq) +6 Fe* (aq) +14 H30' (aq) - 2 Cr* (aq) + 6 Fe" (aq) + 21 H20 (1) a. What is the oxidizing agent in the above reaction? b. A dichromate stock solution is made by dissolving 2.567 g of K Cr2O, (294.2 g/mol) in a total of 50.0 ml. What is the...
For the following reaction between Mohr's salt (iron as FeSO4(NH4)2S04 6H2O) and potassium dichromate (dichromate as K2Cr207), determine the volume (in milliliters) of a 0.220 M solution of Mohr's salt that is needed to fully react with 0.0300 L of 0.220 M potassium dichromate. (The reaction is shown in its ionic form in the presence of a strong acid.) Cr,o:- + 6Fe2 + + 14H+ → 2Cr3 + + 6Fe3 + + 711,0 Number Mohr's salt volume- mL For the...
The density of a solution of potassium dichromate is 1.0665 g/cc, and it is 9.50 percent by mass. What volume of the solution (in milliliters) do you need to supply 44.0 g of potassium dichromate? please show you work
What is the dichromate Ton concentration in a saturated solution of the slightly soluble salt AgaCroy. what is the dichromate ion concentration is 0.25 M Agt is presented in the solution
For your experiment, you prepared 2ml of cells with a concentration of 2x106/ml (Tube F). You would like to use this cell's solution to prepare a 7ml flask (Tube G) of cells with a concentration of 5x105cells/ml. What volume in microliters of cell solution will you take from tube F into tube G?
What is the concentration of free sulfate ion in a solution prepared by dissolving 1.8 moles of sulfuric acid in 500 mL of water. Ka1 = very large, Ka2= 1.1 x 10