2007年10月12日 星期五

CE Chemistry: mc question on Sulphuric acid and Bleach

1. Cl2(g)+2NaOH(aq) -> NaCl(aq) + NaOCl(aq) +H2O(l)
The sodium hydroxide solution used has to be COLD and DILUTE.

2. Chlorine and sodium hydroxide are manufactured from the chloro-alkali industry.
What are the other important products?
Hydrogen gas, hydrogen chloride gas, hydrochloric acid and sodium hypochlorite.
If there is a chance, here it can be the answer.