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State true or false: Reaction of K(2)Cr(...

State true or false: Reaction of `K_(2)Cr_(2)O_(7)` with cold and concentrated `H_(2)SO_(4)` yields bright orange/red precipitate of `CrO_(3)` write reactions involved.

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To determine whether the statement is true or false, we need to analyze the reaction of potassium dichromate (K₂Cr₂O₇) with cold and concentrated sulfuric acid (H₂SO₄) and identify the products formed. ### Step 1: Identify the Reactants The reactants in this reaction are: - Potassium dichromate (K₂Cr₂O₇) - Concentrated sulfuric acid (H₂SO₄) ### Step 2: Write the Reaction ...
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The reaction of NaCl and K_(2)Cr_(2)O_(7) mixture with conc. H_(2)SO_(4) result in the formation of:

Sodium chloride on heating with aqueous solution of K_(2)Cr_(2)O_(7) and concentrated H_(2)SO_(4) produces:

The evolution of a red-brown gas on heating a salt with K_(2)Cr_(2)O_(7) and concentrated H_(2)SO_(4) can arise from:

When a mixture of solid NaCl and solid K_(2)Cr_(2)O_(7) is heated with concentrated H_(2)SO_(4) deep red vapours are obtained.This is due to the formation of:

On heating a mixture of NaCl, K_(2)Cr_(2)O_(7) and conc. H_(2)SO_(4) which of the following is formed ?

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

The conversion of K_(2)Cr_(2)O_(7) into Cr_(2)(SO_(4))_(3) is

A solid mixture of AgCl ad K_(2)Cr_(2)O_(7) is heated with conc. H_(2)SO_(4) and produces:

When K_(2)Cr_(2)O_(7) is heated with conc. H_(2)SO_(4) and soluble chloride such as KCl :

K_(2)Cr_(2)O_(7)+NaoH to CrO_(4)^(2-)

RESONANCE ENGLISH-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 1
  1. Why it is not advisable to dissolve KMnO(4) in cold and concentrated H...

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  2. What happen when: (a) Green Vitriol is strongly heated. , (b) FeSO(4)...

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  3. State true or false: Reaction of K(2)Cr(2)O(7) with cold and concentra...

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  4. Write balanced chemical equations for: (i) Mixture of K(2)Cr(2)O(7) ...

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  5. What are inner transition elements? Decide which of the following atom...

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  6. Actinoid contraction is greater from element to element than lanthanoi...

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  7. The chemistry of the actinoid elements is not so smooth as that of the...

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  8. Why Sm^(2+) , Eu^(2+) and Yb^(2+) ions are good reducing agents , but ...

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  9. The transition elements have a general electronic configuration.

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  10. The atomic volume of the transition elements are low compared with ele...

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  11. The wrong statement regarding transition metals among the following is...

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  12. First IE of 5d seties element are higher than those of 3d and 4d serie...

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  13. Ionisation energies of Ni and Pt in Kjmol^(-1) are given below {:(,u...

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  14. Maximum oxidation state is shown by:

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  15. Which of the following statement is false?

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  16. Which of the following has the maximum number of unpaired d-electron?

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  17. Highest magnetic moments, shown by the transition metal ion with the ...

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  18. Magnetic moment of Cr^(+2)(Z=24),Mn^(+2)(Z=25) and Fe^(2+) (Z=26) are ...

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  19. Spin only magnetic moment of .(25)Mn^(x+)ion is sqrt(15) B.M. Then, t...

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  20. Colour in transition metal compounds in attributed to

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