In 180 g of water, 20 g of salt was dissolved. what is the mass fraction of salt in the solution?
| January 17, 2021 | education
Formula for determining the mass fraction of a substance in a solution:
W (in-va) = m (in-va) / m (solution) • 100%.
Determine the mass of the solution after adding salt:
m (solution) = m (salt) + m (water).
m (solution) = 20 + 180 = 200 g.
The mass fraction of salt in the solution is:
W (salt) = 20/200 • 100% = 10%.
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