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Calculate the mass of non-volatile solute having molar mass of 40g/mol,which should be dissolved in 114g octane to reduce its vapour pressure to 80%.

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9 months ago

Saurabh Koranglekar
10341 Points
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9 months ago
Vikas TU
14146 Points
```							Dear studentLet p be the vapour pressure of pure octane. The vapour pressure of solution will be   p=0.8 p.Molar mass of solute (M) and octane (m)  are 40 g/mol and 114 g/mol respectively. Mass of octane, w is 114 g.p-p'/p = Wm/MwW = 8g Hence, 8 g of solute are required.
```
9 months ago
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