Question

沉有10g氯酸钾和二氧化锰的混合物加热充分反应后剩余固体质量为7.6g

Answer 1

m(O2)=10-7.6=2.4(g)

2KClO3==△==2KCl+3O2

245 96

x 2.4g

x=6.125(g)

m(KClO3)=6.125g

m(MnO2)=10-6.125=3.875(g)