1) Give a word equation of using sodium peroxide and water for a laboratory preparation for oxygen gas
I apologize if my response wasn't what you expected. In laboratory preparations of oxygen gas, hydrogen peroxide can be used as a source of oxygen gas when it reacts with manganese (IV) oxide as a catalyst. The reaction proceeds as follows:
2H2O2 + MnO2 → O2 + 2H2O
Again, I apologize for any confusion caused. Please let me know if you have any other questions.