How many moles HCL will be required to react with potassium heptaoxodichromate (VI) to produce 3 moles of chlorine?
-
A.
14 -
B.
12 -
C.
11 -
D.
10
Correct Answer: Option A
Explanation
K(_{2})Cr(_{2})O(_{7}) + HCl → Cl(_{2}) + KCl + CrCl(_{3}) + H(_{2})O
Balancing the equation, we have
K(_{2})Cr(_{2})O(_{7}) + 14HCl → 3Cl(_{2}) + 2KCl + 2CrCl(_{3}) + 7H(_{2})O