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Rufina [12.5K]
4 years ago
8

Which solution is most dilute?

Chemistry
1 answer:
olga55 [171]4 years ago
3 0

C. 0.1 M HCl

Explanation:

The solution with the lowest molarity is the most dilute of all.

This is why the choice is 0.1M of HCl.

Molarity is the same as concentration. The unit "M" denotes mole per liter volume of solution.

  • Molarity is defined as the number of moles of solute in a give volume of solution.
  • 0.1M means 0.1mole of HCl is dissolved in 1liter of solvent.
  • The higher the number of moles dissolved and the more the concentration of the solution will be.

The order of increasing concentration is:

  0.1M < 0.2M< 0.3M < 0.4M

learn more:

Molarity brainly.com/question/9324116

#learnwithBrainly

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When 7.94 g of xylene was added to 132.5 g of cyclohexane, the freezing point of the solution was -4.9oC. What is the molar mass
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Answer is: molar mass of xylene 106,18 g/mol.
m(xylene) = 7,94 g.
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T (solution) = - 4,9 °C.
Tf(cyclohexane) = 6,5 °C, frezing point.
Kf(cyclohexane) = 20,2 K·kg/mol; cryoscopic constant.
ΔT(solution) = 6,5°C - (-4,9°C) = 11,4°C = 11,4 K.
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M(xylene) = 106,18 g/mol.


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