Answer to Question #129718 in Organic Chemistry for Priyanshu

Question

On heating 1.5 g of a mixture of kclo3 and kcl decreased to 0.12 g. If heating klolo3 creates kcl, calculate the percentage amount of kclo3 in the mixture.

Answer 1

2KClO₃ = 2KCl + 3O₂

The mass of oxyged released 0.12 g

n(O₂)= 0.12/32=0.00375 mol

n(KClO₃)=2/3 n(O₂) = 0.0025 mol

m(KClO₃) = 0.30625 g

w(KClO₃) = 0.30625 / 1.5 = 20.42%

Answer: w(KClO₃) = 20.42%