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Some Basic Concepts of Chemistry question

2017 · Q89
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Some Basic Concepts of Chemistry question

2017 · Q89

NEETChemistrySome Basic Concepts of ChemistryMCQ+4 / −1
Which of the following is dependent on temperature?
  1. A
    Molarity
  2. B
    Mole fraction
  3. C
    Weight percentage
  4. D
    Molality
View written solutionFree

Correct answer: A

Molarity =

Number of moles of solute
Volume of solution (in L)



Molality =
Number of moles of solute
Mass of solvent (in kg)


Mole fraction =
Number of moles of component
Total number of moles of all components


Weight percentage =
Weight of a component
Total weight of solution
$ \times $ 100

KEY Concept : Those units which are volume related will be affected by the change in temperature.



The definition of molarity is - Number of moles of solute present in one litre of solution. From definition you can see it is depends on volume which increases with increasing temperature and decreases with decreasing temperature.

All the other three options (Molality, Mole fraction, Weight fraction of solute) are mass related units and temperature has no effect on mass.

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