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Borate form green colour flame when buru...

Borate form green colour flame when burunt With (Conc. H_(2)S0_(4) + Ethanol). Green colour flame is obtained due to formation of -

A

`(C_(2)H_(5)O)_(3)B`

B

`(C_(2)H_(5))_(2)BO_(3)`

C

`(C_(2)H_(5))_(3)BO_(3)`

D

1 and 3 are correct

Text Solution

Verified by Experts

The correct Answer is:
3
Ethyl boratic `(C_(2)H_(5))_(3)BO_(3)" or "(C_(2)H_(5)O)_(3)B`
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Knowledge Check

  • Borate from green colour flame when burnt with (Conc. H_2SO_4+ ethanol). Green colour flame is obtained due to due to formation of

    A
    `(C_2H_5O)_3B`
    B
    `(C_2H_5)_2BO_3`
    C
    `(C_2H_5)_3B`
    D
    A and C are correct

  • Borate form green edged flame when burnt with conc. H_(2)SO_(4)+ ethanol. Green edged flame has formula -

    A
    `(C_(2)H_(5)O)_(3) B`
    B
    `(C_(2)H_(5))_(2)BO_(2)`
    C
    `(C_(2)H_(5))_(3)BO_(3)`
    D
    1 and 3

  • When NH_4OH is added to copper sulphate solution, blue colour is obtained due to formation of

    A
    `Cu(NH_3)_4 SO_4`
    B
    `Cu(NH_3 SO_4)_2`
    C
    `Cu(OH)_2`
    D
    `CuO`

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