it turns into a pinkish red color
phenolphthalein
Sodium Chloride is neutral. And Phenolphthalein is colourless when neutral.
Sodium bicarbonate is a salt - NaHCO3.
Sodium bicarbonate increases the antiseptic action of sodium hypochlorite.
Yes, because sodium bicarbonate solution is basic.
At a particular point, the color of the indicator would change from colorless to pink (purple).
Pink
Sodium hydroxide is a base. And phenolphthalein is a pH indicator that changes color at around a pH of 8.4, so you can tell when your solution that endpoint.
hot sodium bicarbonate
By dissolving in water the necessary quantity to obtain the desired concentration of sodium bicarbonate.
dilute sodium hydroxide solution
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