K(2)Cr(2)O(7) is an example of...

`K_(2)Cr_(2)O_(7)` is an example of

hexagonal

triclinic

cubic

Orthorhombic.

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The correct Answer is:

For `K_(2)Cr_(2)O_(7)` that is, triclinic system, `a ne b ne c, alpha ne beta ne gamma = 90^(@)`

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Potassium iodide reacts with acidified K_(2)Cr_(2)O_(7) . How many moles of KI are required for one mole of K_(2)Cr_(2)O_(7) ?

In a reaction, Cr_(2)O_(7)^(2-) is reduced to Cr^(3+) . What is concentration of 0.1M K_(2)Cr_(2)O_(7) in equivalent per litre? Cr_(2)O_(7)^(2-)+14H^(+)+6erarr2Cr^(3+)+7H_(2)O

If K_(2)Cr_(2)O_(7) is source of Cr_(2)O_(7)^(2-) , what is the normality of solution containing 4.9 g of K_(2)Cr_(2)O_(7) in 0.1 litre of solution?

Assertion :- In acidic medium, equivalent weight of K_(2)Cr_(2)O_(7) is equal to 294//6 . Reason :- In acidic medium, Cr_(2)O_(7)^(-2) is reduced in Cr^(+3)

When K_(2)Cr_(2)O_(7) is converted to K_(2)CrO_(4) , the change in the oxidation state of chromium is

Assertion (A): Potassium dichromate is preferred to Na_(2)Cr_(2)O_(7) for use in volumetric analysis (titrations) Reason (R): Na_(2)Cr_(2)O_(7) is hygroscopic whilst the K_(2)Cr_(2)O_(7) is not Which of the following is correct ?

On oxidation of alcohol with H^(o+) K_(2)Cr_(2)O_(7) , maximum yield of compound will be obtained in :

In laboratory K_(2)Cr_(2)O_(7) is used mainly not Na_(2)Cr_(2)O_(7). Why?

Statement-1: K_(2)Cr_(2)O_(7)+2NaCl toNa_(2)Cr_(2)O_(7)+2KCl Statement-2: K_(2)Cr_(2)O_(7) is less soluble than Na_(2)Cr_(2)O_(7) .

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