Based on the following two reaction equations, calculate the molarity of an unknown ascorbic acid if titrating 15 mL of this unknown solution consumes 15.67 mL of 0.01235 M of KIO3 solution to reach the end point.  [1]    KIO3 + 5KI + 6H+ → 3I2 + 6K+ + 3H2O    [2]    C6H8O6 + I2 → C6H6O6 + 2I- + 2H+

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6. Based on the following two reaction equations, calculate the molarity of an unknown ascorbic acid if titrating 15 mL of this unknown solution consumes 15.67 mL of 0.01235 M of KIO3 solution to reach the end point.

 [1]    KIO3 + 5KI + 6H+ → 3I2 + 6K+ + 3H2O

 

 [2]    C6H8O6 + I2 → C6H6O6 + 2I- + 2H+

Hint: each KIO3 produces 3 molecules of I2, and each I2 molecule will consume one molecule of ascorbic acid C6H8O6

Group of answer choices
A, 0.0387
B, 0.387
C, 0.0129
D, 0.129
 
 
 

 

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