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patriciamelton57
13.02.2021 •
Chemistry
You are provided with 6.33 L of a 4.50 M solution. How many moles of solute were required to create this solution
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Ответ:
173.83 mmHg is the vapor pressure of a ethylene glycol solution.
Explanation:
Vapor pressure of water at 65 °C=![p_o= 187.54 mmHg](/tpl/images/0028/5661/56ace.png)
Vapor pressure of the solution at 65 °C=![p_s](/tpl/images/0028/5661/89b98.png)
The relative lowering of vapor pressure of solution in which non volatile solute is dissolved is equal to mole fraction of solute in the solution.
Mass of ethylene glycol = 22.37 g
Mass of water in a solution = 82.21 g
Moles of water=![n_1=\frac{82.21 g}{18 g/mol}=4.5672 mol](/tpl/images/0028/5661/2eda9.png)
Moles of ethylene glycol=![n_2=\frac{22.37 g}{62.07 g/mol}=0.3603 mol](/tpl/images/0028/5661/3424a.png)
173.83 mmHg is the vapor pressure of a ethylene glycol solution.