When heated, a sample of potassium chlorate(V) (KClO3\text{KClO}_3KClO3) produced 85.0 cm3 of oxygen, measured at 315 K and 102 kPa.
2KClO3(s)→2KCl(s)+3O2(g) 2\text{KClO}_3(\text{s}) \rightarrow 2\text{KCl}(\text{s}) + 3\text{O}_2(\text{g}) 2KClO3(s)→2KCl(s)+3O2(g)What is the amount, in moles, of potassium chlorate(V) that has decomposed?
The gas constant, R=8.31 J K−1 mol−1R = 8.31\text{ J K}^{-1}\text{ mol}^{-1}R=8.31 J K−1 mol−1
1.66×10−31.66 \times 10^{-3}1.66×10−3
2.21×10−32.21 \times 10^{-3}2.21×10−3
3.31×10−33.31 \times 10^{-3}3.31×10−3
4.97×10−34.97 \times 10^{-3}4.97×10−3
