Kevin Nash
Last Activity: 11 Years ago
(i) The substance is Na base 2O base 2. When
dissolved in water, the solution becomes alkaline with the liberation of H base
2O base 2 Na base 2O base 2 + 2H base 2O ? 2NaOH + H base 2O base 2
NOTE : Due to the alkaline solution, the red litmus
paper will turn into blue, which subsequently changes into white due to
oxidation caused by H base 2O base 2.
(ii) The substance Na base 2O merely produces
alkaline solution and thus the red litmus paper will turn into blue.
Na base 2 + H base 2O ? 2NaOH