K_2Cr_2O_7 is preferred compared to Na_2Cr_2O_7 for use in volumetric analysis as a primary standard because

MHT CET Chemistry question

is preferred compared to for use in volumetric analysis as a primary standard because

Answer: (A)

A primary standard must not absorb moisture; Na2Cr2O7 is hygroscopic whereas K2Cr2O7 is not and can be obtained pure

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Question ID VK-074337