a. A student weighs out 9.18 g of CrSO4, transfers it to a 500. mL volumetric...

a. A student weighs out 9.18 g of CrSO₄, transfers it to a 500. mL volumetric flask, adds enough water to dissolve the solid and then adds water to the 500 mL mark on the neck of the flask.
Calculate the concentration (in molarity units) of chromium(II) sulfate in the resulting solution? ______M

b. In the laboratory, a student adds 13.3 g of aluminum acetate to a 125 mL volumetric flask and adds water to the mark on the neck of the flask. Calculate the concentration (in mol/L) of aluminum acetate, the aluminum ion and the acetate ion in the solution.

[Al(CH₃COO)₃]	= __M
[Al³⁺]	= __M
[CH₃COO^-]	= __ M

c. Calculate the mass, in grams, of manganese(II) iodide that must be added to a 250-mL volumetric flask in order to prepare 250 mL of a 0.193 M aqueous solution of the salt. ____g

Expert Solution

a.

b.

c.

queen_honey_blossom answered 10 months ago

A student weighs by difference 0.1956g of sodium oxalate into a 100ml Volumetric flask and dilutes...

A student weighs by difference 0.1956g of sodium oxalate into a 100ml Volumetric flask and dilutes to the mark 10mL of HCI and 90mL of distilled water. The student then pipetted a 25mL aliquot of the ocalate solution to a 125mL Erlenmeyer flask. Approximately how many mL's of 0.02 M KMnO4 would be requied to reach the equivalence point of the trtration? The balanced alf reactions are: Reduction: MnO4- + 8H+ + 5e- --> Mn2+ + 4H2O Oxidation: C2O4 2-...

A student is asked to standardize a solution of barium hydroxide. He weighs out 1.06 g...

A student is asked to standardize a solution of barium hydroxide. He weighs out 1.06 g potassium hydrogen phthalate (KHC8H4O4, treat this as a monoprotic acid). It requires 23.0 mL of barium hydroxide to reach the endpoint. A. What is the molarity of the barium hydroxide solution? =M This barium hydroxide solution is then used to titrate an unknown solution of hydrochloric acid. B. If 20.7 mL of the barium hydroxide solution is required to neutralize 12.8 mL of hydrochloric...

A student is asked to standardize a solution of potassium hydroxide. He weighs out 0.965 g...

A student is asked to standardize a solution of potassium hydroxide. He weighs out 0.965 g potassium hydrogen phthalate (KHC8H4O4, treat this as a monoprotic acid). It requires 25.9 mL of potassium hydroxide to reach the endpoint. A. What is the molarity of the potassium hydroxide solution? _________M This potassium hydroxide solution is then used to titrate an unknown solution of hydrochloric acid. B. If 21.5 mL of the potassium hydroxide solution is required to neutralize 27.7 mL of hydrochloric...

A student is asked to standardize a solution of barium hydroxide. He weighs out 0.989 g...

A student is asked to standardize a solution of barium hydroxide. He weighs out 0.989 g potassium hydrogen phthalate (KHC8H4O4, treat this as a monoprotic acid). It requires 25.0 mL of barium hydroxide to reach the endpoint. A. What is the molarity of the barium hydroxide solution? This barium hydroxide solution is then used to titrate an unknown solution of hydroiodic acid. B. If 18.0 mL of the barium hydroxide solution is required to neutralize 23.6 mL of hydroiodic acid,...

A chemistry student weighs out 0.204g of ascorbic acid H2C6H6O6, a diprotic acid, into a 250.mL...

A chemistry student weighs out 0.204g of ascorbic acid H2C6H6O6, a diprotic acid, into a 250.mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1800M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Round your answer to 3 significant digits.Answer in mL

student is asked to standardize a solution of calcium hydroxide. He weighs out 0.993 g potassium...

student is asked to standardize a solution of calcium hydroxide. He weighs out 0.993 g potassium hydrogen phthalate (KHC8H4O4, treat this as a monoprotic acid). It requires 20.1 mL of calcium hydroxide to reach the endpoint. A What is the molarity of the calcium hydroxide solution? This calcium hydroxide solution is then used to titrate an unknown solution of hydroiodic acid. B. If 25.5 mL of the calcium hydroxide solution is required to neutralize 15.0 mL of hydroiodic acid, what...

Michael Farday weighs out 3.12 g. of salicylic acid in a 100 mL flask and adds...

Michael Farday weighs out 3.12 g. of salicylic acid in a 100 mL flask and adds 1.89 mL of acetic anhydride (density = 1.080 g/mL). Determine the maximum (theoretical) number of grams of acetylsalicylic acid he can prepare. If Mr. Faraday obtained 3.38 g. of Aspirin, calculate the % yield. Briefly, explain why he might have obtained this amount of product.

An analytical chemist weighs out 0.093g of an unknown monoprotic acid into a 250mL volumetric flask...

An analytical chemist weighs out 0.093g of an unknown monoprotic acid into a 250mL volumetric flask and dilutes to the mark with distilled water. He then titrates this solution with 0.1600M NaOH solution. When the titration reaches the equivalence point, the chemist finds he has added 6.5mL of NaOH solution. Calculate the molar mass of the unknown acid. Round your answer to 2 significant digits.

In the laboratory you dissolve 21.5 g of ammonium chloride in a volumetric flask and add water to a total volume of 500 . mL.

suppose that 0.3562 g of na2c2o4 is dissolved in a 250 mL volumetric flask. if 10...

suppose that 0.3562 g of na2c2o4 is dissolved in a 250 mL volumetric flask. if 10 mL of this solution required 48.36 mL of kmno4 to reach the endpoint what is the molarity of the permanganate solution

Question