Question

5 multiple choice 20 points which coefficients wil balance the chemical equation below? kcl + o₂ → kclo₃ 1,1,1 1,3,2 no coefficients will balance this equation. 2,3,2

Explanation:

Step1: Balance the equation

Let the coefficients be \(a\), \(b\), \(c\) for \(KCl\), \(O_2\), \(KClO_3\) respectively. So the equation is \(aKCl + bO_2
ightarrow cKClO_3\).
By the conservation of \(K\) and \(Cl\) (since \(K\) and \(Cl\) are in a 1:1 ratio in \(KCl\) and \(KClO_3\)), \(a = c\).
By the conservation of \(O\), \(2b=3c\).

Step2: Substitute and find values

Let \(a = c = 2\), then from \(2b = 3c\), substituting \(c = 2\), we get \(2b=3\times2\), so \(b = 3\).

Answer:

\(2,3,2\) (the fourth option)