• # question_answer 10) Show by a chemical reaction with water that $N{{a}_{2}}O$ is a basic oxide and is an acidic oxide.

$N{{a}_{2}}O$reacts with water and forms a strong base, i.e. sodium hydroxide. $N{{a}_{2}}O+{{H}_{2}}O\to 2NaOH$ $\text{C}{{\text{l}}_{\text{2}}}{{\text{O}}_{\text{7}}}$reacts with water and forms a strong acid, perchloric acid. $C{{l}_{2}}{{O}_{7}}+{{H}_{2}}O\to 2HCl{{O}_{4}}$ Both the products can be tested qualitatively with litmus paper. $NaOH$ + Red litmus paper Blue colour $HCl{{O}_{4}}$ + Blue litmus paper Red colour