# How do you balance and translate this reaction: #KClO_3(s) -> KCl(s) + O_2(g)#?

##### 1 Answer

May 23, 2017

#### Answer:

#### Explanation:

Let's identify : K is potassium, Cl is chlorine and O is oxygen.

Let's identify the state symbols : (s) is solid, and (g) is gas.

Let's identify the unbalanced element(s) : Potassium is balanced, there are 1 on each side. Chlorine is balanced, there are 1 on each side. Oxygen is **not** balanced, there's 3 on the LHS, and 2 on the RHS.

How many times does 2 go into 3? The answer is 1.5. Change the coefficient of the oxygen on the RHS from 1 to 1.5

But we can't have *half atoms* in chemical equations. Multiply the entire equation by 2 to get rid of the half atom.

Now everything is balanced : There are 2 potassium, 2 chlorine and 6 oxygen atoms.