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JEE Main 20206 SeptemberMorning Shift
Exam
JEE Main
Year
2020
Date
6 September
Shift
Morning Shift
Subject
Chemistry
Chapter
Some Basic Concepts of Chemistry

JEE Main 2020 · 6 September · Morning Shift · Chemistry · Some Basic Concepts of Chemistry

A solution of two components containing n _ 1 moles of the 1 ^ st...

A solution of two components containing n1{n}_{1} moles of the 1st{1}^{\text{st}} component and n2{n}_{2}moles of the 2nd{2}^{\text{nd}} component is prepared. M1{M}_{1} and M2{M}_{2} are the molecular weights of component 1 and 2 respectively. If dd is the density of the solution in gmI−1,C2{gmI}^{- 1}, {C}_{2} is the molarity and x2{x}_{2} is the mole fraction of the 2nd{2}^{\text{nd}} component, then C2{C}_{2} can be expressed as :

Options

  1. A{C}_{2} = \dfrac{1000{x}_{2}}{{M}_{1} + {x}_{2}\left({M}_{2} - {M}_{1}\right)}
  2. B{C}_{2} = \dfrac{{dx}_{2}}{{M}_{1} + {x}_{2}\left({M}_{2} - {M}_{1}\right)}
  3. C{C}_{2} = \dfrac{1000{dx}_{2}}{{M}_{1} + {x}_{2}\left({M}_{2} - {M}_{1}\right)}
  4. D{C}_{2} = \dfrac{{dx}_{1}}{{M}_{2} + {x}_{2}\left({M}_{2} - {M}_{1}\right)}

Correct answer

C. {C}_{2} = \dfrac{1000{dx}_{2}}{{M}_{1} + {x}_{2}\left({M}_{2} - {M}_{1}\right)}

Step-by-step solution

{C}_{2} = \dfrac{1000{dx}_{2}}{{M}_{1} + {x}_{2}\left({M}_{2} - {M}_{1}\right)}
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