Salina was testing chemical nature of a calcium compound. She took oxide of that element in a test tube and added water in it. She found that they react together and hot alkali was formed. She wrote the nature of chemical reaction involved in following ways:
CaO2+2H2O→2NaOH + O2
Calcium oxide shows endothermic reaction with water and forms lime water after reaction.
She has mistaken while recording the nature of the compound. Copy them in correct form.