Indicators are complex organic compounds used to determine end-points in neutralization processes, hydrogen-ion concentration, and indicate a desired change in pH
In the standardization of sodium hydroxide solution, the primary standard used was 0.67g potassium biphthalate and it used up 25.3mL of the solution. The concentration (N) of sodium hydroxide solution is 0.1297N or 0.1N
If 30 ml HCl were required in the titration of a 0.8560g sodium carbonate, the weight of the following pure reagents needed to neutralize 30ml of the hydrochloric acid solution would be: A. NaHCO3, B. KOH, C. CaO, D. Ba(OH)2