  The concentration of Fe2+ in a solution is determined by titration with a 0.1869 M Ce4+ solution. The balanced net ionic equation for the reaction is:Ce4+(aq) + Fe2+(aq)   Ce3+(aq) + Fe3+(aq)  (a) If 23.90 mL of the 0.1869 M Ce4+ solution are needed to react completely with 20.00 mL of the Fe2+ solution, what is the concentration of the Fe2+ 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 250. mL. What is the concentration of Ce3+ in the diluted solution?  M

Question

The concentration of Fe2+ in a solution is determined by titration with a 0.1869 M Ce4+ solution. The balanced net ionic equation for the reaction is:

Ce4+(aq)

+

Fe2+(aq)

Ce3+(aq)

+

Fe3+(aq)

(a) If 23.90 mL of the 0.1869 M Ce4+ solution are needed to react completely with 20.00 mL of the Fe2+ solution, what is the concentration of the Fe2+ 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 250. mL. What is the concentration of Ce3+ in the diluted solution?  M

Step 1

The equation is

Step 2

Number of moles of Ce4+ is :

Step 3

From equation, 1 mol of Ce4+ is needed to react completely with 1 mol of Fe2+ solution,

...

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