A scientist needed to determine the concentration of a solution of iron(II) ions. To do this, they titrated 40.0 mL of the analyte against 0.0100 M potassium permanganate solution. The titration was repeated multiple times to improve the accuracy. Determine the concentration of the solution of iron (II) ions.

Barium sulphate is a relatively insoluble salt used for medical radiographs of the gastrointestinal tract: BaSO4 (s) - Ba2 (aq) + SO42 (aq) The concentration of Ba2* ions in a saturated aqueous solution is 1.05x10 M. Determine Ksp for barium sulphate dissolving in water. O2.12 x 10 5 O1.05 x 1025 O 1.12 x 10-5 O 1.10 x 10-25 1.10 x 10 10

A student performed three KHP titrations in Part 1 in order to standardize their NaOH solution. They reported the following measurements: Mass of KHP + Vial Mass of 'Empty' Vial Final Burette Reading Initial Burette Reading Determination #1 16.7538 g 16.2649 g 21.67 mL 0.40 mL Determination #2 14.1709 g 13.5560 g 26.98 mL 0.31 mL Determination #3 15.6625 g 15.0833 g 26.04 mL 0.93 mL How many moles of KHC8H4O4 did they use in their second titration? Report your answer to the correct number of significant figures and only report the numerical value (no units).

At 40 °C, Kw = 2.92 × 10‒14. At 50 °C, a solution with pOH = 7.00, has a pH of ____________. Group of answer choices:   7.00 and is neutral. 7.00 and is slightly basic. 6.53 and is slightly basic. 6.53 and is slightly acidic.

Calculate the volume in liters of 0.545 M KOH necessary to titrate 0.0113 moles of hydrochloric acid, HCl, to a phenolphthalein end-point. Report the answer with three significant figures.

For cerium(III) hydroxide, Ce(OH)3, Ksp equals 2.0  10-20. Calculate its molarsolubility

5) Find the concentration of H30*(aq) in a 1.75 M solution of lactic acid, HC3H5O3, at 25°C. Ka= 1.38 x 10*. 6) Write the equilibrium expression for the ionization of HOI, and calculate the concentration of HOI(aq) in solution if [H3O*]=2.3 x 10° M and pKa = 10.7 at 25°C.

HCl(aq) Fe(CIO)₂(aq) NaCIO4 (aq) Highest pH Lowest pH Answer Bank NaCN(aq) LiOH(aq)

magnesium hydroxide, Mg(OH)2, found in milk of magnesia, has a solubility of 7.05x10-3 gL-1 at 25ºC. Calculate the Ksp for Mg(OH)2 with a tolerance of +8 (Please type answer)

Calculate the pOH of a 0.0376 M HCIO solution at each temperature. 0°C pOH = 35 °C pOH = T (°C) 0 5 10 15 20 30 35 40 45 50 100 Kw 1.15 x 10 1.88 x 10 2.97 x 10 4.57 x 10 6.88 x 10 1.46 × 10 2.07 x 10 2.88 x 10 3.94 x 10 5.31 x 10 5.43 x 10 45 45 44 H 45 15 15 14 +4 44