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6) A chemist tested the concentration of a stock solution of iron (11) using dichromate solution...
The amount of iron in steel can be determined by titration with dichromate. First, the steel...
The amount of iron in steel can be determined by titration with dichromate. First, the steel is dissolved in hydrochloric acid to oxidize all the iron to Feat. An indicator is added that will react with excess dichromate. Then, potassium dichromate is added to the solution until the end point is reached. Cr, 02- +6Fe2+ + 14H+ > 2Cr3+ +6Fe3+ + 74,0 For the analysis of 2.00 g of steel, the titration required 22.70 mL of 0.1800 M K2Cr207. What...
For the following reaction between Mohr's salt (iron as FeSO4(NH4)2S04 6H2O) and potassium dichromate (dichromate as...
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 reaction between iron(II) ( Fe2+ ) and dichromate ( Cr2O2−7 ) in the presence of...
The reaction between iron(II) ( Fe2+ ) and dichromate ( Cr2O2−7 ) in the presence of a strong acid ( H+ ) is shown. Cr2O2−7+6Fe2++14H+⟶2Cr3++6Fe3++7H2O Determine the volume, in milliliters, of a 0.180 M solution of Mohr's salt ( (NH4)2Fe(SO4)2⋅6H2O ) needed to completely react with 0.0500 L of 0.180 M potassium dichromate ( K2Cr2O7 ). volume? ... mL What volume, in milliliters, of 0.180 M K2Cr2O7 is required to completely react with 0.0500 L of a 0.180 M solution...
2) ( ) An acidic potassium dichromate can be used to titrate a solution of iron(II)...
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...
A 250.0 mL sample of spring water was treated to convert any iron present to Fe2+...
A 250.0 mL sample of spring water was treated to convert any iron present to Fe2+ . Addition of 24.00 mL of 0.002543 M K2Cr2O7 resulted in the reaction 6Fe2+ + Cr2O7 2- + 14H+ 6Fe3+ + 2Cr3+ + 7H2O The excess K2Cr2O7 was back titrated with 8.02 mL of 0.00971 M Fe2+ solution. Calculate the concentration of iron in the sample in ppm. Please be specific and include details.
11. To determine the concentration of a solution of sulfuric acid, a chemist titrates the solution...
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?
used to titrate a solution of iron(II) ions., with which it reacts according to Cerium(IV) sulfate...
used to titrate a solution of iron(II) ions., with which it reacts according to Cerium(IV) sulfate Ce4(aq)Fe2 (aq)>Ce3*(aq) + Fe3 (aq) A cerium(IV) sulfate solution is prepared by dissolving 40.47 g of Ce(SO42 in water and diluting to a total volume of 1.000 L. A total of 19.41 mL of this solution is required to reach the endpoint in a titration of a 100.0-mL sample containing Fe(aq). Determine the concentration of Fe2 in the original solution It is desired precipitate,...
It's a weak acid strong base titration Experiment 4: Identification of an unknown acid by titration...
It's a weak acid strong base titration
Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
Question 6 Using stock solutions to make up a solution: from final concentration to volume You...
Question 6 Using stock solutions to make up a solution: from final concentration to volume You need to digest a sample of DNA with a restriction enzyme. You will do this reaction later in the semester. The buffer for this reaction has a final concentration of 40 mM Tris, pH 7.5, 10 mM MgCl2 and 50 mM KCl. You have the following stock solutions: 0.5 M Tris, pH 7.5, 1 M MgCl2 and 2 M KCl. How would you make...
I need it right now, please help me?? PROCEDURE PART I: DILUTING THE VINEGAR SOLUTION The...
I
need it right now, please help me??
PROCEDURE PART I: DILUTING THE VINEGAR SOLUTION The vinegar solution must be diluted by a factor of 5 to be suitable for titration. 1. Obtain - 20 ml of the stock vinegar solution from the fume hood. 2. Using the 10-ml. pipet, pipet" 10 mL of the stock solution to a 50-ml volumetric flask. 3. Fill the volumetric flask to the calibration line with distilled water. Be sure not to go over...
The amount of iron in steel can be determined by titration with dichromate. First, the steel is dissolved in hydrochloric acid to oxidize all the iron to Feat. An indicator is added that will react with excess dichromate. Then, potassium dichromate is added to the solution until the end point is reached. Cr, 02- +6Fe2+ + 14H+ > 2Cr3+ +6Fe3+ + 74,0 For the analysis of 2.00 g of steel, the titration required 22.70 mL of 0.1800 M K2Cr207. What...
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...
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...
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?
used to titrate a solution of iron(II) ions., with which it reacts according to Cerium(IV) sulfate Ce4(aq)Fe2 (aq)>Ce3*(aq) + Fe3 (aq) A cerium(IV) sulfate solution is prepared by dissolving 40.47 g of Ce(SO42 in water and diluting to a total volume of 1.000 L. A total of 19.41 mL of this solution is required to reach the endpoint in a titration of a 100.0-mL sample containing Fe(aq). Determine the concentration of Fe2 in the original solution It is desired precipitate,...
It's a weak acid strong base titration
Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
I
need it right now, please help me??
PROCEDURE PART I: DILUTING THE VINEGAR SOLUTION The vinegar solution must be diluted by a factor of 5 to be suitable for titration. 1. Obtain - 20 ml of the stock vinegar solution from the fume hood. 2. Using the 10-ml. pipet, pipet" 10 mL of the stock solution to a 50-ml volumetric flask. 3. Fill the volumetric flask to the calibration line with distilled water. Be sure not to go over...
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