Aqueous potassium iodate (KIO3) and potassium iodide (KI) react in the presence of dilute hydrochloric acid, as shown below.
KIO3(aq) + 5KI(aq) + 6HCl(aq) 3I2(aq) + 6KCl(aq) + 3H2O(l)
What mass of iodine (I2) is formed when 50.0 mL of 0.020 M KIO3 solution reacts with an excess of KI and HCl?
A) 0.13 g I2
B) 0.25 g I2
C) 0.38 g I2
D) 0.76 g I2
E) none of the above
Correct Answer:
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