Survey of Chemistry

Question

O2 can be produced by the reaction 2KClO3 --> 2KCl + 3O2. In one experiment, 0.312g of O2 was formed. How much KCl was formed?

Answer 1

1. Convert g O₂ to mol O₂ by dividing by molar mass of O₂
2. Multiply by 2/3 (from stoichiometry of the balanced equation) to convert mol O₂ to mol KCl
3. Multiply by molar mass of KCl to convert mol KCl to g KCl

Answer

0.485 g KCl