Why anhydrous na2co3 is considered as primary standard

1.	Why anhydrous na2co3 is considered as primary standard
Answer» Answer: Only those acids or bases areconsidered PRIMARY STANDARD which are stable and hence their strength do not change with time.Strength ofNa2CO3 also do not change hence it isconsidered as a primary standard.Na2CO3 is used as primary standardbecause it's solution's molarity REMAINS constant for a very long PERIOD.

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Answer:

Only those acids or bases areconsidered PRIMARY STANDARD which are stable and hence their strength do not change with time.Strength ofNa2CO3 also do not change hence it isconsidered as a primary standard.Na2CO3 is used as primary standardbecause it's solution's molarity REMAINS constant for a very long PERIOD.

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Why anhydrous na2co3 is considered as primary standard

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