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Give reasons for following in one or two...

Give reasons for following in one or two sentences:
`CrO_3` is an acid anhydride?

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`CrO_3` readily dissolves in water to give chromic acid, which acts as strong acid. Therefore, `CrO_3` is an acid anhydride.
`CrO_3 + H_2O to H_2CrO_4`
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MODERN PUBLICATION-D AND F-BLOCK ELEMENTS-CONCEPTUAL QUESTION
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  2. Explain how the colour of K2Cr2O7 solution depends on pH of the solut...

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  3. Name the oxometal anions of the first series of the transition metals ...

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  4. Complete the following reactions : (i) Cr(2)O(7)^(2-)+Sn^(2+)+H^(+) ...

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  5. Sodium chloride when heated with conc. H(2)SO(4) and solid potassium d...

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  6. Give reasons for following in one or two sentences: CrO3 is an acid ...

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  7. Complete the following chemical equations : (i) KMnO4 overset(513K...

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  8. Why KMnO(4) is used in cleaning surgical instruments in hospitals ?

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  9. Identify the oxoanion of chromium which is stable in acidic medium

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  10. In the transition series, starting from lanthanum La(Z=57), the next e...

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  11. One among the lanthanoides, Ce(III), can be easily oxidized to Ce(IV) ...

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  12. Why do Zr and Hf exhibit similar properties ?

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  13. What are the different oxidation states exhibited by the lanthanoids?

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

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  15. The trivalent ion having size in lanthanide series is

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  16. Give one example each of lanthanoid ion having +2, +3 and +4 oxidation...

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  17. Can lanthanum ion (Z = 57) exist in +4 oxidation state ? Justify your ...

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  18. Why is chemistry of all lanthanoids identical ?

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  19. Why is europium (II) more stable than cerium (II) ?

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  20. What are alloys? Name an important alloy which contains some of the la...

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