NEETChemistrySome Basic Concepts of ChemistryMCQ+4 / −1
In one molal solution that contains 0.5 mole of a solute, there is
- A500 mL of solvent
- B500 g of solvent
- C100 mL of solvent
- D1000 g of solvent
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Correct answer: B
Molality is the moles of solute dissolved per kg of solvent therefore 500 g, 1 molal solution contains 0.5 of solute, as
$$m = {{Moles\,of\,solute} \over {Mass\,of\,solvent\,(in\,kg)}}$$
$$1 = {{0.5} \over {Mass\,of\,solvent\,(in\,kg)}}$$
$\therefore$ Mass of solvent (in kg) = 0.5
= 500 g
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