Calculation for preparing sodium hypochlorite by using sodium hydroxide to absorb chlorine gas

Thread Content

1. When referring to sodium hypochlorite, it is common to mention the amount of available chlorine it contains. If we are preparing sodium hypochlorite with 10% available chlorine, should the amount of chlorine gas be calculated based on the available chlorine content as the basis for such calculations? 2. Generally, 15% sodium hydroxide is used for producing hyposodium. Assuming that the amount of chlorine from the previous question is used as a basis for calculation, it is possible to determine the amount of pure sodium hydroxide required. But is 15% sodium hydroxide obtained in this way the correct concentration? For each concentration of sodium hydroxide used to prepare sodium hypochlorite, the effective chlorine content as well as the mass fraction of sodium hypochlorite remain constant. Based on the theoretical calculation for sodium hypochlorite with 10% effective chlorine, the required concentration of sodium hydroxide is around 12.5%. So, if pure sodium hydroxide is used to achieve a 15% concentration, will it be necessary to add water to the solution later on? Please give me your guidance