Question
Which of the statements is not true?
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On passing H2S through acidified K2Cr2O7 solution, milky colour is observed.
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Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis
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Na2Cr2O7 solution in acidic medium is orange
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K2Cr2O7 solution becomes yellow on increasing the pH beyond 7
Solution
B.
Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis
Being hygroscopic, sodium dichromate Na2Cr2O7 cannot be used in volumetric analysis. All other given statements are true.
