Hydrogen sulfide with a volume of 44.8 liters was dissolved in 20 liters of water to find the mass fraction of the acid.

univerkov | December 19, 2020 | education

n = V / Vm
n (H2S) = 44.8 / 22.4 = 2 mol
m = M * n
M (H2S) = 2 + 32 = 34 g / mol
m (H2S) = 34 * 2 = 68 g
m (H20) = 20,000 g
m (solution) = m (H2S) + m (H2O) = 68 + 20,000 = 20068 g
ω (H2S) = (m (H2S) / m (solution)) * 100% = (68/20068) * 100% = 0.34%
Answer: mass fraction of hydrogen sulfide acid is 0.34%.

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