5 g of salt was dissolved in 100 g of water. calculate the mass fraction of salt?
| May 2, 2021 | education
Given:
m (H20) or solvent = 100 g
m (substance) or salt = 5 g
To find:
ω (salt) -?
Decision:
1) ω = m (substance) / m (solution) x 100%
2) m (solution) = mass of solute + mass of solvent
5 g + 100 g = 105 g
3) ω = 5 g / 105 g = 0.048
0.048 x 100% = 4.8%
Answer: ω (salt) = 4.8%
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