Use the References to access important values if needed for this question. The concentration of H3ASO3 in a solution is determined by titration with a 0.1945 M Ce** solution. The balanced net ionic equation for the reaction is: 2Ce**(aq) + H3ASO3(aq) + 5H,O(1) 2Ce*(aq) + H3ASO,(aq) + 2H3O*(aq) (a) If 19.83 mL of the 0.1945 M Ce** solution are needed to react completely with 30.00 mL of the H3ASO, solution, what is the concentration of the H3ASO3 solution? M (b) Which of the two solutions was in the buret during the titration? (c) Suppose at the end of the titration, the solution containing the Cet ion is transferred to a volumetric flask and diluted to 300. mL. What is the concentration of Cein the diluted solution? Submit Answer 5 question attempts remaining

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Use the References to access important values if needed for this question.
The concentration of H3ASO3 in a solution is determined by titration with a 0.1945 M Ce+ solution. The balanced net ionic equation for the reaction is:
2Ce*(aq) + H3ASO3(aq) + 5H2O(1) 2Ce*(aq) + H3ASO4(aq) + 2H3O*(aq)
(a) If 19.83 mL of the 0.1945 M Ce** solution are needed to react completely with 30.00 mL of the H3ASO3 solution, what is the concentration of the
H3ASO3 solution?
M
(b) Which of the two solutions was in the buret during the titration?
(c) Suppose at the end of the titration, the solution containing the Ce³* ion is transferred to a volumetric flask and diluted to 300. mL. What is the
concentration of Ce3+In the diluted solution?
Submit Answer
5 question attempts remaining
Transcribed Image Text:o/index.html?deploymentld%=55750828934189288909969212&eiSBN=9781305657571&snapshotld%32199898&id%3... ☆ IDTAP Q Search this cou Use the References to access important values if needed for this question. The concentration of H3ASO3 in a solution is determined by titration with a 0.1945 M Ce+ solution. The balanced net ionic equation for the reaction is: 2Ce*(aq) + H3ASO3(aq) + 5H2O(1) 2Ce*(aq) + H3ASO4(aq) + 2H3O*(aq) (a) If 19.83 mL of the 0.1945 M Ce** solution are needed to react completely with 30.00 mL of the H3ASO3 solution, what is the concentration of the H3ASO3 solution? M (b) Which of the two solutions was in the buret during the titration? (c) Suppose at the end of the titration, the solution containing the Ce³* ion is transferred to a volumetric flask and diluted to 300. mL. What is the concentration of Ce3+In the diluted solution? Submit Answer 5 question attempts remaining
Expert Solution
Step 1

This titration is an example of a redox titration because oxidation states of species are changing. Titrant Ce4+ is a oxidising agent and it oxidise As3to As5+ oxidation state i.e. Change in oxidation state of 2 so n-factor for arsenic acid is 2. While Ce4+ goes to Ce3+ i.e. change in oxidation state of 1, so n-factor for cerium is 1.

 

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