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What is the effect of increasing pH on K...

What is the effect of increasing `pH` on `K_2Cr_2O_7` solution?

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In aqueous solution, we have

When `pHlt4` (acidic medium) it exists as `Cr_2O_7^(2-)` and colour is orange When `pHgt7` (Basic medium), it exists as `CrO_4^(2-)` and colour is yellow.
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CENGAGE CHEMISTRY-APPENDIX INORGANIC VOLUME 2-Short Answer Type
  1. Name one ore each of manganese and chromium.

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  2. In the transition series with an increase in atomic number, the atomic...

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  3. What is the effect of increasing pH on K2Cr2O7 solution?

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  4. What is the basic difference between the electronic configuration of t...

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  5. Why do transition elements show similarities along the horizontal peri...

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  6. Out of Al,Zn,Mg and Fe, which is the densest element?

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  7. Why do transition elements configuration of the element with atomic nu...

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  8. Explain why transition elements have manuy irregularties in their elec...

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  9. The paramagnetic character in 3d transition series elements increases ...

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  10. Scandium forms no coloured ions, yet it is regarded as a transition el...

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  11. Assertion : Hydrochloric acid is not used to acidify a KMnO(4) solutio...

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  12. Why Sm^(2+) , Eu^(2+) and Yb^(2+) ions in solution are good reducing a...

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  13. Why is the separation of lanthanide elements difficult?

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  14. The second ionisation enthalpies of both Cr and Cu are higher than tho...

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  15. Name the compound used for measuring the hardness of water, i.e., for ...

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  16. How will you distinguish between the following isomer pairs? (a). (i...

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  17. The magnitude of stability constant gives an indication of the stabili...

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  18. What are the most common coordination numbers encountered in coordinat...

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  19. Name the central atom present in haemoglobin and chlorophyll.

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  20. Wilkinson's catalyst is used as a homogeneous hydrogenation catalyst f...

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