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Among the following statement choose the...

Among the following statement choose the true or false statements(s).
`K_(2)Cr_(2)O_(7)`on heating with charcoal gives mettalic potassium and `Cr_(2)O_(3)`
on heating in current of `H_(2)` the crystalline `KMnO_(4)` is converted into `KOH` and `Mn_(3)O_(4)`
Hydrated ferric chloride on treatment with `2-2`-dimethoxypropane gives anhydrous ferric chloride.

Text Solution

Verified by Experts

The correct Answer is:
(a) False (b) False (C ) True
`K_(2)Cr_(2)O_(7)+2C(charcoal)undersettoDelta Cr_(2)+K_(2)CO_(3)+COuparrow`.
`2KMnO_(4)+5H_(2)undersettoDelta2KOH+2MnO+4H_(2)O`
`FeCl_(3).6H_(2)O+6-CHunderset(OCH_(3))underset(|)overset(OCH_(3))overset(|)(C)-CH_(3) to ("anhydrous")+12CH_(3)OH+6CH_(3)COOH_(3)`.
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K_(2)Cr_(2)O_(7) on heating with aqueous NaOH gives

K_(2)Cr_(2)O_(7) , on heating gives

H_(2)Cr_(2)O_(7) on heating with aqueous NaOH gives

(NH_(4))_(2)Cr_(2)O_(7) on heating gives a gas which is also given by :

(NH_(4))_(2)Cr_(2)O_(7) overset("heat") to

Knowledge Check

  • K_(2)Cr_(2)O_(7) on heating with aqueous NaOH gives

    A
    `Cr(OH)_(2)`
    B
    `Cr(OH)_(3)`
    C
    `CrO_(4)^(2-)`
    D
    `Cr^(3+)`

  • K_(2)Cr_(2)O_(7) on heating with aqueous NaOH gives

    A
    `CrO_(4)^(2-)`
    B
    `Cr(OH)_(3)`
    C
    `Cr_(2)O_(7)^(2-)`
    D
    `Cr(OH)_(2)`

  • K_(2)Cr_(2)O_(7) , on heating gives

    A
    `Cr_(2)O_(3)`
    B
    `K_(2)CrO_(4)`
    C
    `O_(2)`
    D
    All of these