A mass of 0.630 g of nacl is dissolved in 525 g of water. part a calculate the molality of the salt solution.

Chemistry

1 answer:

lesya [120]3 years ago

6 0

Molality is simply defined as the number of moles of solute over the mass of the solvent.

In this case the solute is NaCl and the solvent is water, therefore:

moles solute = 0.630g/ 58.44 g/mol = 0.0108 mol

So the molality is:

m = 0.0108 mol / (0.525 kg)

<span>m = 0.0205 molal</span>

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