Given below are two statements:
Statement I : Aqueous solution of 
is preferred as a primary standard in volumetric analysis over 
aqueous solution.
Statement II : 
has a higher solubility in water than 
.
choose the correct answer from the options given below :
Text Solution
Verified by ExpertsC
Aqueous solution of 
is preferred as a primary standard in volumetric analysis over
aqueous solution because the Na compound is hygroscopic while the K compound is not. Sodium dichromate is more soluble in water than potassium dichromate due to smaller size of sodium ions and high hydration energy as compared to potassium ions. Hence, statement I is true, but statement II is false.
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