Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
Manipal MET2013Chemistryd and f Block Elements

If CO ₂( ~g ) under pressure is passed into Na ₂ CrO ₄(a q) , yellow colour solution changes to

Options

  1. Ablue
  2. Bgreen
  3. Cred
  4. Dorange-red

Correct answer

D. orange-red

Step-by-step solution

gathered CO ₂+ H ₂ O H ₂ CO ₃ H ⁺+ HCO ₃⁻ 2 CrO ₄²⁻ yellow 2 Cr ⁺ orange red Cr ₂ O ₇²⁻+ H ₂ O gathered Aqueous CO ₂ is acidic and changes yellow CrO ₄²⁻ into orange Cr ₂ O ₇²⁻ .

Practice d and f Block Elements on Quantrex Academy →

More from d and f Block Elements

Pick out the correct option Assertion(A): Mercury is not considered as a transition element Reason (R): Mercury is a liquid 2026Which of the following does not correctly represent the order of the property indicated against it? 2026The element with the highest third ionisation enthalpy is: 2026The product and its colour when MnO₂ is fused with KOH in presence of O₂ : 2026The ion that has a spin only magnetic moment of 5.9 BM is: 2026Which one of the following species will impart colour to an aqueous solution? 2026The basic character of transition metal monoxides follows the order: 2026K ₂ Cr ₂ O ₇ on heating with aqueous NaOH gives ------------------------- 2026 Full d and f Block Elements list All Manipal MET PYQs