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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)_(3)^(-)`

C

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

D

`Cr(OH)_(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
`CrO_(3)+2NaOH rarr underset("Yellow solution")(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

ERRORLESS -D & P-BLOCK ELEMENTS-Ordinary Thinking (Compounds of d & f block elements)
  1. The metal oxide which decomposes on heating, is:

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  2. In the reduction of dichromate by Fe(II), the number of electrons invo...

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

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