When H(2)O(2) is added to an acidified s...

When `H_(2)O_(2)` is added to an acidified solution of `K_(2)Cr_(2)O_(7)`

Orange colour of solution turns blue

O.S. of Cr atom decreases

O.S. of Cr atom remains constant

None of these

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When H_(2)O_(2) is added to a acidified solution of K_(2)Cr_(2)O_(7) :

When SO_2 gas is passed through an acidified solution of K_2 Cr_2 O_7 , the solution turns ___ in colour.

H_(2)S gas is passed through an acidic solution of K_(2)Cr_(2)O_(7) .The solution turns milky, why?

When SO_(2) is passed through acidified K_(2)Cr_(2)O_(7) solution

20 " mL of " H_(2)O_(2) is reacted completely with acidified K_(2)Cr_(2)O_(7) solution 40 " mL of " K_(2)Cr_(3)O_(7) solution was required to oxidised the H_(2)O_(2) completely. Also, 2.0 " mL of " the same K_(2)Cr_(2)O_(7) solution required 5.0 " mL of " a 1.0 M H_(2)C_(2)O_(4) solution to reach equivalence point. Which of the following statements is/are correct?

When H_(2)S is passed through acidified K_(2)Cr_(2)O_(7) solution, the solution turns :

Which one of the following statements is correct when SO_(2) is passed through acidified K_(2)Cr_(2)O_(7) solution?

Write the equations . (i) Acidified solution of K_(2)Cr_(2)O_(7) turns green when sodium sulphite is added to it. (ii) Potassium ferricyanide is added to ferrous sulphate . (iii) Silver chloride is treated with aqueous sodium cyanide . (iv) Zinc is exposed to moist air .

(a) Name the blue compound formed in the reaction of H_(2)O_(2) with acidified K_(2)Cr_(2)O_(7) in ether? Give reaction. (b) What is the principle in the bleaching action of H_(2)O_(2) ?

When acidified solution of K_(2)Cr_(2)O_(7) is shaken with aqeous solution of FeSO_(4) , Then:

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