How many moles of HCl will be required to react with potassium heptaoxodichromate (VI) to produce3 moles of chlorine?

How many moles of HCl will be required to react with potassium heptaoxodichromate (VI) to produce3 moles of chlorine?

A. 14

B.12

C. 11

D. 10

First, write the balanced chemical equation for the reaction of potassium heptaoxodichromate(VI) with hydrochloric acid:

K2Cr2O7 + 14HCl 一> 2KCl + 2CrCl3 + 3Cl2 + 7H2O

From the balanced equation:

• 14 moles of HCl produce 3 moles of Cl₂

The question asks: How many moles of HCl are required to produce 3 moles of chlorine?

From the stoichiometric ratio:
3 moles of  Cl2 一>14  moles of  HCl

✅ Correct answer: A. 14

PQN: 11