MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryMole _ Equivalent ConceptApplications of Strength of Solutions

6.023 × 1020 molecules of urea are present in 100 mL of its solution. The concentration of urea solution is

A.0.001 M

B.0.1 M

C.0.02 M

D.0.01 M✓ Correct

Explanation

It is defined as the number of moles of the solute in 1 litre of the solution. Number of molecules (given)= 20 6.02 10 x No. of moles = 20 3 23 6.02 10 10 6.02 10 x x mol 3 Volume of solution=100ml=0.1L No. of moles 10 , Molarity= 0.01 0.1 Therefore M Volume

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