Prepare the following solutions by determiing the proper mass of solute (or volume in the case...
Prepare the following solutions by determiing the proper mass of solute (or volume in the case where you are working from a stock solution) that will need to be transferred to the volumetric flask. Use diemensional analysis where apporpriate to do so. Describe how you would make each solution.
a. 150.0 mL of .50 M hydrochorlic acid solution from a concetrated stock solution of 12.0M hydrochloric acid.
b. 250.0 mL of a 1.50 M solution of potassium permanganate.
c. 2.00 L of a 3.0 Molar solution of perchloric acid from a 5.0M stock solution of perchloric acid.
d. 500.0 mL of a .300 molar solution of calcium hydroxide.
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Prepare the following solutions by determiing the proper mass of
solute (or volume in the case...
answer all 4 please!!! What volume of a 0.263 M perchloric acid solution is required to...
answer all 4 please!!!
What volume of a 0.263 M perchloric acid solution is required to neutralize 22.5 mL of a 0.150 M calcium hydroxide solution? mL perchloric acid What volume of a 0.122 M potassium hydroxide solution is required to neutralize 16.2 mL of a 0.288 M hydrochloric acid solution? mL potassium hydroxide An aqueous solution of calcium hydroxide is standaridized by titration with a 0.199 M solution of hydroxide acid. If 12.6 mL of base are required to...
Standard solutions of calcium ion used to test for water hardness are prepared by dissolving pure...
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A chemist must prepare 250.0 ml of hydrochloric acid solution with a pH of 1.80 at...
A chemist must prepare 250.0 ml of hydrochloric acid solution with a pH of 1.80 at 25°C. He will do this in three steps: Fila 250.0 ml. volumetric flask about halfway with distilled water. • Measure out a small volume of concentrated (6.0 M) stock hydrochloric acid solution and add it to the flask. . Fill the flask to the mark with distilled water, Calculate the volume of concentrated hydrochloric acid that the chemist must measure out in the second...
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molarity of acid: 0.1435M
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What are volumetric pipets and burets and what are they used for? 1. 2. To what volume are you to record the values from the buret? 3. 0.3811 g sample of KOH will just neutralize what volume of...
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04 (a) Calcium ions can be determined by precipitation of the oxalate according to the equation:...
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A student obtains 500.0 mL of a solution containing an unknown concentration of calcium iodide, CaI 2. She pipets 25 mL of this solution into a 100 mL volumetric flask and dilutes to the mark. She then pipets 10 mL of this diluted solution into a 50 mL volumetric flask and dilutes to the mark. She analyzes some of the solution from the final volumetric flask and finds that the iodide ion concentration is 0.0000064 M. Determine the molar concentration...
SHOW ALL WORK NO WORK - NO CREDIT 1. You weigh out an antacid tablet and...
SHOW ALL WORK NO WORK - NO CREDIT 1. You weigh out an antacid tablet and determine the mass to be 1.1990 g. After taking a 0.2455 g sample of the antacid tablet, vou dissolve it in 25.00 mL of a 0.1006 M solution of hydrochloric acid in a 250.0 mL Erlenmeyer flask. After heating the solution to get rid of carbon dioxide, you titrate the leftover hydrochloric acid in the solution in the Erlenmever flask with a 0.09913 M...
A chemist obtains 500.0 mL of a solution containing an unknown concentration of calcium iodide (CaI...
A chemist obtains 500.0 mL of a solution containing an unknown concentration of calcium iodide (CaI 2). She pipets 25 mL of this solution into a 100 mL volumetric flask and dilutes to the mark. Shethen pipets 10 mL of this diluted solution into a 25 mL volumetric flask and dilutes to the mark. She analyzes some of the solution from the final volumetric flask and finds that the iodide ion concentration is 0.00000446 M. (in solution, calcium iodide breaks...
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answer all 4 please!!!
What volume of a 0.263 M perchloric acid solution is required to neutralize 22.5 mL of a 0.150 M calcium hydroxide solution? mL perchloric acid What volume of a 0.122 M potassium hydroxide solution is required to neutralize 16.2 mL of a 0.288 M hydrochloric acid solution? mL potassium hydroxide An aqueous solution of calcium hydroxide is standaridized by titration with a 0.199 M solution of hydroxide acid. If 12.6 mL of base are required to...
Standard solutions of calcium ion used to test for water hardness are prepared by dissolving pure calcium carbonate, CaCO3, in dilute hydrochloric acid. A 1.579 g sample of CaCO3 is placed in a 150.0 mL volumetric flask and dissolved in HCl. Then the solution is diluted to the calibration mark of the volumetric flask. Calculate the resulting molarity of calcium ion. Molarity M For convenience, one form of sodium hydroxide that is sold commercially is the saturated solution. This solution...
A chemist must prepare 250.0 ml of hydrochloric acid solution with a pH of 1.80 at 25°C. He will do this in three steps: Fila 250.0 ml. volumetric flask about halfway with distilled water. • Measure out a small volume of concentrated (6.0 M) stock hydrochloric acid solution and add it to the flask. . Fill the flask to the mark with distilled water, Calculate the volume of concentrated hydrochloric acid that the chemist must measure out in the second...
molarity of acid: 0.1435M
volume:25ml
1. Use the molar mass and moles of acetic acid to determine the mass of the acetic acid in the 25.00-ml sample. 2. Calculate the mass/volume percentage (m/v %) by dividing the mass of acetic acid in grams by the volume of the vinegar sample in mL and multiplying by 100. 3. For the reaction of sodium hydroxide solution with a solution of hydrochloric acid: a. Write a balanced molecular equation for the reaction, including...
What are volumetric pipets and burets and what are they used for? 1. 2. To what volume are you to record the values from the buret? 3. 0.3811 g sample of KOH will just neutralize what volume of 0.2000 M HS02 Write the balanced chemical equation. a. b. What volume of 0.2000 M H SO, will just neutralize the KOH sample? 4. In a experiment similar to yours, a solution is prepared by adding 4.512 g of slaked lime also...
04 (a) Calcium ions can be determined by precipitation of the oxalate according to the equation: Ca2+ (aq) + C2O42- (aq) = CaC204 (s) The solid may then be filtered off, washed and oxalic acid is regenerated by the addition of excess sulfuric acid. The amount of oxalic acid is then quantified by titration using potassium permanganate according to the equation: H2C204 + MnO4 + H+ = CO2 + Mn2+ + H20 (unbalanced) In an experiment to find the concentration...
SHOW ALL WORK NO WORK - NO CREDIT 1. You weigh out an antacid tablet and determine the mass to be 1.1990 g. After taking a 0.2455 g sample of the antacid tablet, vou dissolve it in 25.00 mL of a 0.1006 M solution of hydrochloric acid in a 250.0 mL Erlenmeyer flask. After heating the solution to get rid of carbon dioxide, you titrate the leftover hydrochloric acid in the solution in the Erlenmever flask with a 0.09913 M...
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