Question #129502

calculate the vapour pressure of 10% Equus glucose solution at 30°C if vapour pressure of pure water is 31.8 MM

Expert's answer

"\\Delta p=\\frac{nb}{na}\\times pa"

pa=31.8

10% - 10 g solute in 90 g water

"nb=\\frac{m}{M}=\\frac{10}{180}=0.056"

"na=\\frac{m}{M}=\\frac{90}{18}=5"

"\\Delta p=\\frac{0.056}{5}\\times31.8=0.356"

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