Question

The set of numerical coefficients that balances the equation

K₂CrO₄ + HCl → K₂Cr₂O7 + KCl + H₂O is

(a) 2, 2, 1, 1, 1

(b) 2, 2, 1, 2, 1

(c) 2, 2, 2, 1, 1

(d) 2, 1, 1, 2, 1

Answer 1

Correct option is (b) 2, 2, 1, 2, 1

Balanced chemical equation is:

2K₂CrO₄ + 2HCl → K₂Cr₂O7 + 2KCl + H₂O

The set of numerical coefficient is 2, 2, 1, 2, 1.