Given the balanced equation: 2KClO3 - ->2KCl + 3O2

How many grams of KCl are produced by decomposing 1.5 mol KClO3?

molar mass KCl=74.6 g

a

111.9 g

b

72.5 g

c

15.0 g

d

85.2 g

Option a → 111.9 g

Explanation:

The reaction is this:

2KClO₃ → 2KCl + 3O₂

2 moles of chlorate decompose to 2 moles of chloride and 3 moles of oxygen. Ratio is 2:2.

If I use 1.5 moles of chlorate I'll get the same moles of chloride by the decomposition.

Let's convert the moles to mass: 1.5 mol. 74.6 g / 1mol = 11.9 g