Consider the following characteristics for a primary standard substance : The substance has high formula weight. The substance is 100% pure with very less impurity of only 0.01 to 0.02%. The substance is stable indefinitely at room temperatures. The substance is involved in a reaction for which equilibrium is far right to obtain a very sharp end point. The above statements are correct for which one of the following pair of substances ?

(d) KHC₈H₄O₄ and H₂SO₄

Consider the following characteristics for a primary standard… | Geo-Scientist Prelims 2025 Chemistry Q38

Consider the following characteristics for a primary standard substance :

The substance has high formula weight.
The substance is 100% pure with very less impurity of only 0.01 to 0.02%.
The substance is stable indefinitely at room temperatures.
The substance is involved in a reaction for which equilibrium is far right to obtain a very sharp end point.

The above statements are correct for which one of the following pair of substances ?

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