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CrO(3) dissolves in aqueous NaOH to give...

`CrO_(3)` dissolves in aqueous NaOH to give:

A

`CrO_(4)^(2-)`

B

`Cr(OH)_(2)`

C

`Cr_(2)O_(7)^(2-)`

D

`Cr(OH)_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
`2NaOH + CrO_(3) to Na_(2)CrO_(4) + H_(2)O`
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Cr)_(3) dissolved in aqueous NaOH to give:

Compound (A) C_(7)H_(8)O is insoluble in aqueous NaHCO_(3) and dissolves in aqueous NaOH and gives a characteristic colour with neutral FeCl_(3) . When treated with Br_(2) (A) forms compound (B) C_(7)H_(5)O Br_(3) . The structure of compound (B) would be :

Compound (A) C_(7)H_(8)O is insoluble in aqueous NaHCO_(3) and dissolves in aqueous NaOH and gives a characteristic colour with neutral FeCl_(3) . When treated with Br_(2) (A) forms compound (B) C_(7)H_(5)O Br_(3) . The most probable structure of compound A is :

Compound (A) C_(7)H_(8)O is insoluble in aqueous NaHCO_(3) and dissolves in aqueous NaOH and gives a characteristic colour with neutral FeCl_(3) . When treated with Br_(2) (A) forms compound (B) C_(7)H_(5)O Br_(3) . What could be the structure of compound (A) if neither dissolves in aq. NaHCO_(3) nor gives a characteristic colour with FeCl_(3) ?

CI_(2) reacts with hot aqueous NaOH to give

NARAYNA-D - BLOCK ELEMENTS-EXERCISE-2
  1. Number of electrons transferred in each case when KMnO(4) acts as an o...

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  2. MnO(4)^(-) is of intense pink colour, though Mn is in(+7) oxidation st...

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  3. KMnO(4) dissollution in concentration H(2)SO(4) results in explosion d...

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  4. When K(2)MnO(4) is added in solution of NH(4)Cl then

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  5. K(2)Cr(2)O(7) is preferred to Na(2)Cr(2)O(7) for use in volumetric ana...

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  6. The blue colour produced on adding H2O2 to acidified K2Cr2O7 is due to...

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  7. CrO(3) dissolves in aqueous NaOH to give:

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  8. The n-factor for K(2)Cr(2)O(7) in acidic medium is

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  9. In electrorefining of copper,some gold is deposited as

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  10. Arrange Ce^(3+),La^(3+), Pm^(3) and Yb^(3+) in increasing order of the...

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  11. Horn silver ore dissolves in excess of sodium cyanide solution forming

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  12. Using a Ziegler Natta catalyst the polythene formed is

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  15. A white solid Y, on heating gives off a gas which turns lime water mil...

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  16. If H(2)S gas is passed into a solution of Cu^(2+), Cd^(2+) having exce...

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  17. It is non experimental fact that Cs(2)[CuCl(4)] is orange coloured but...

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  18. The correct regarding CuCl(5)^(-3) compound is

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  19. What will be the hybridisation of Ni(CN)(5)^(-3) ?

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