A Solution of Methanol and Water Has a Vapour Pressure

question 154

Multiple Choice

A solution of methanol and water has a vapour pressure of 213 Torr. What would you predict as the mole fractions of each component, assuming ideal behaviour? The vapour pressures of methanol and water are 256 Torr and 55.3 Torr, respectively.

• A) = 0.214, = 0.786
• B) = 0.786, = 0.214
• C) = 0.885, = 0.115
• D) = 0.900, = 0.100
• E) = 0.115, = 0.885

---

Definitions:

Rate of Return

The net gain or loss on an investment over a specified period, expressed as a percentage of the investment's initial cost.

Stock Price

The current market price at which a share of stock can be bought or sold.

Discount Rate

The interest rate used to discount future cash flows to their present value, often reflecting the risk associated with the cash flows.

Projected Dividends

The estimated dividends a company plans to pay out to its shareholders in the future.