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

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

A

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

B

`CrO_(4)^(2-)`

C

`Cr(OH)_(3)`

D

`Cr)OH)_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`CrO_(3)+H_(2)O+NaOH(XS)+Na_(2)CrO_(4)` Yellow solution
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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

BANSAL-D AND F BLOCK ELEMENTS-Exercise-1 (Single Correct Choice Type)
  1. Coinage metals show the properties of

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  2. Cr(2)O(7)^(2-)underset(Y)overset(X)hArr 2CrO(4)^(2-)X and Y are respec...

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

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  4. An ornament of gold having 75% of gold, is of carat.

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  5. Solution of MnO(4)^(-) is purple-coloured due to :

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  6. Transition elements having more tendency to form complex than represen...

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  7. uarr Y(g)overset(KI)(larr)CuSO(4)overset(dilH(2)SO(4))(rarr)X(Bluecolo...

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  8. The actinoids exhibit more number of oxidation states in general than ...

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  9. x,y and z are respectively

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  10. underset(("bot"))(Cu+conc.HNO(3))toCu(NO(3))(2)+X (oxide of nitrogen...

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  11. Pick out the incorrect statement:

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  12. The metals present in insulin and haemoglobin are respectively:

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  13. Metre scales are madeup of alloy:

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  14. A metal M which is not affected by strong acids like conc. HNO(3),conc...

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  15. underset(("Acidified"))(KMnO(4))+HCltoH(2)O+X(g),X is a:

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  16. Amongst the following species, maximum covalent character is exhibited...

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  17. Number of moles of K(2)Cr(2)O(7) can be reduced by 1 mole of Sn^(2+) i...

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  18. Pick out the incorrect statement:

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  19. The aqueous solution of CuCrO(4) is green because it contains:

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  20. The aqueous solution of the following salts will be coloured in the ca...

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