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प्रश्न
Which of the following statements is not true?
पर्याय
on passing H2S, through acidified K2Cr2O7 solution, a milky colour is observed.
Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis.
K2Cr2O7 solution in acidic medium is orange in colour.
K2Cr2O7 solution becomes yellow on increasing the pH beyond 7.
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उत्तर
Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis
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संबंधित प्रश्न
Draw the structure of the chromate ion.
Write observed electronic configuration of elements from first transition series having half
filled d-orbitals.
Permanganate ion changes to ____________ in acidic medium.
The number of moles of acidified KMnO4 required to oxidize 1 mole of ferrous oxalate (FeC2O4) is ____________.
Complete the following.
\[\ce{MnO^-_4 + Fe^2+ ->?}\]
Complete the following.
\[\ce{KMnO4 ->[\Delta][Red hot]?}\]
Complete the following.
\[\ce{Cr2O^2-_7 + I^- + H^+ ->?}\]
Complete the following.
\[\ce{Na2Cr2O7 + KCl ->?}\]
Explain why Cr2+ is strongly reducing while Mn3+ is strongly oxidizing.
Why do the d-block elements form coloured compounds?
