Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas JEE Main2020ChemistrySolutionsPractice

A complex is represented as C o C l 3 . x H 2 O . Its 0 .1   m solution in aqueous medium shows Δ T f = 0.558 K . K f for water is 1.86 k g m o l – 1 K and assuming 100% ionisation of the complex having coordination number 6 . The formula of the complex is

Options

  1. AC o H 2 O 4 C l C l 2
  2. BC o H 2 O 4 C l 2 C l
  3. CC o H 2 O 6 C l 3
  4. DC o H 2 O 5 C l C l 2

Correct answer

D. C o H 2 O 5 C l C l 2

Step-by-step solution

Δ T f = i × K f × m 0.558 = i × 1.86 × 0.1 ⇒ i = 3 So, the total no of ions produce by complex per mole should be 3 C o H 2 O 5 C l C l 2 → C o H 2 O 5 C l 2 + + 2 C l -

Practice Solutions on Quantrex Academy →

More from Solutions

In a solvent S , a compound B is partially dissociated into C and D as given below: B 2 C + 2 D B , C and D are non-volatile in nature. The molar mass of B is 10 times the molar ma 2026Passage: Two volatile liquids A and B form an ideal solution. Consider a 5 molal solution of B in A inside a closed container having a total vapour pressure of 100 mm Hg at 300 K. 2026Passage: Two volatile liquids A and B form an ideal solution. Consider a 5 molal solution of B in A inside a closed container having a total vapour pressure of 100 mm Hg at 300 K. 2026Given below are two statements: Given: Molar mass of C, H, O, Cl are 12, 1, 16 and 35.5 g mol ⁻¹ , respectively. Statement I: In 30 % (w/w) solution of methanol in CCl ₄ (at T K), 2026Which of the following statements are not correct? A. For water, magnitude of K_b is more than the magnitude of K_f . B. The elevation in boiling point of water when a non-volatile 2026Given below are two statements : Statement I : H₂ O molecules move from the chamber 1 to chamber 2 . Statement II : The osmotic pressure of a solution prepared by dissolving 50 mg 2026When 0.25 moles of a non-volatile, non-ionizable solute was dissolved in 1 mole of a solvent the vapor pressure of solution was x % of vapor pressure of pure solvent. What is x % ? 202620 g hemoglobin in a 1 L aqueous solution (A) at 300 K is separated from pure water by semi permeable membrane. At equilibrium the height of solution in a tube dipped in a solution 2026 Full Solutions list All NTA Abhyas JEE Main PYQs