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D and F Block Elements question

2011 · Q100
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D and F Block Elements question

2011 · Q100

NEETChemistryD and F Block ElementsMCQ+4 / −1
Acidified K2Cr2O7 solution turns green when Na2SO3 is added to it. This is due to the formation of
  1. A
    Cr2(SO4)3
  2. B
    CrO42−_4^{2 - }42−​
  3. C
    Cr2(SO3)3
  4. D
    CrSO4
View written solutionFree

Correct answer: A

K2Cr2O7 + 3Na2SO3 + 4H2SO4 →\to→

3Na2SO4 + K2SO4 + Cr2(SO4)3 + 4H2O

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