Question

__is used as primary standard for standardization of NaOH.

a) Sodium carbonate b) Potassium Hydrogen phthalate

c) Sodium chloride d) Potassium dichromate​

Answer 1

Answer:

b) potassium hydrogen phthalate

standardization of a NaOH solution will be carried out either using KHP as the primary standard or by using a standard HCl solution of known concentration.

Answer 2

The correct option is b.

• A primary standard is defined as a reagent that is extremely pure and stable. It has no water or hydration and possesses a high molecular weight.
• Some examples of primary standards are sodium carbonate, potassium dichromate potassium hydrogen iodate, oxalic acid etc.
• Potassium hydrogen phthalate is used primary standard for the standardization of NaOH.